Light pollution
•Download as PPTX, PDF•
5 likes•5,592 views
This document discusses light pollution, which is excessive or inappropriate artificial light that harms human health and wildlife. It defines light pollution and describes its causes such as inadequate lighting design and incorrect installation. The consequences of light pollution include wasted energy, air and light pollution, and negative impacts on living beings. Wildlife like birds and sea turtles are especially harmed by light pollution disrupting natural behaviors and attracting animals to light sources where they can get injured or die. Prevention methods aim to direct light downward and use efficient bulbs to reduce impacts.
Report
Share
Report
Share
Recommended
Light pollution power point presentation
Light pollution is excessive or obtrusive artificial light that has negative impacts. It is most severe in highly populated urban areas. There are several types of light pollution including light trespass, over-illumination, glare, and sky glow. Light pollution disrupts ecosystems and human health, increasing risks like cancer, stress, and sleep deprivation. It also wastes energy and interferes with astronomy. Reduction methods include using minimum light intensities, timers, improved fixtures, and full-cutoff lights to prevent sky glow. Light pollution is a growing global problem.
Light pollution:A detailed study on effects of Artificial Lights At Night
Light pollution refers to excessive, misdirected or obtrusive artificial light. It has multiple negative impacts on human health, wildlife, and ecosystems. There are four main types of light pollution: skyglow, glare, light clutter and light trespass. Light pollution disrupts circadian rhythms in humans and animals. It decreases melatonin production and increases health risks. It also decreases reproduction and foraging success in many species. Effective solutions include using full-cut off fixtures, minimizing blue light emissions, creating lighting zones, and automatic light sensors. Proper lighting design can help address this growing environmental problem.
Light pollution
This document discusses the topic of light pollution. It begins with an introduction that defines light pollution and describes how artificial light at night scatters in the atmosphere, degrading views of the night sky. It then discusses the different types of light pollution including sky glow, glare, light trespass, and overlighting. The causes of light pollution are listed as excessive and unnecessary use of outdoor lighting along with improper lighting fixtures and designs. The effects of light pollution are outlined as negative impacts on human health, disruption to nocturnal wildlife, and effects on flora. The document concludes with recommendations for mitigation of light pollution through improved lighting fixtures and light sources that direct light downward rather than polluting the night sky.
Light pollution
What is Light Pollution ?
Types of light pollution
Causes of light pollution
Effects of light pollution
Solution
Light pollution
Excessive artificial light at night can cause light pollution through light scattering in the atmosphere, glare, light trespass onto unintended areas, over-illumination, and skyglow. Light pollution disrupts wildlife behaviors like foraging, navigation, and predator avoidance, leading to increased mortality and decreased populations and body weight. It also negatively impacts humans by reducing vision, disrupting circadian rhythms, and decreasing melatonin production, potentially causing health issues. Additionally, light pollution contributes to energy waste, global warming through fossil fuel emissions, and increased air pollution by reducing atmospheric cleaning. The solution involves using efficient, directed outdoor lighting and educating the public.
Light pollution ppt.pptx
This document discusses light pollution, which refers to excessive and inappropriate artificial light that negatively impacts the environment. It defines different types of light pollution like sky glow, glare, light trespass, and overlighting. Causes are discussed like lack of shielding, timing controls, and improper fixture selection. Effects are on fauna like disrupting bird and insect behaviors, and on flora by interfering with nocturnal pollination and increasing algal blooms. In conclusion, artificial light at night disrupts natural darkness needed for rest and biological rhythms of both humans and other organisms.
Light Pollution: Kinds, Consequences, & Solutions
There are 4 types of light pollution: glare, over-illumination, light trespass, and skyglow. Light pollution wastes energy, affects human and animal health, and changes ecosystems. It can harm sea turtles and insects that use moonlight to navigate. Solutions are simple - use shielded lights that direct light downward and only where needed, and turn lights off when not in use.
Air pollution.
Components of air , Air Pollution , Types of air pollution , Sources , and how to control air pollution
Recommended
Light pollution power point presentation
Light pollution is excessive or obtrusive artificial light that has negative impacts. It is most severe in highly populated urban areas. There are several types of light pollution including light trespass, over-illumination, glare, and sky glow. Light pollution disrupts ecosystems and human health, increasing risks like cancer, stress, and sleep deprivation. It also wastes energy and interferes with astronomy. Reduction methods include using minimum light intensities, timers, improved fixtures, and full-cutoff lights to prevent sky glow. Light pollution is a growing global problem.
Light pollution:A detailed study on effects of Artificial Lights At Night
Light pollution refers to excessive, misdirected or obtrusive artificial light. It has multiple negative impacts on human health, wildlife, and ecosystems. There are four main types of light pollution: skyglow, glare, light clutter and light trespass. Light pollution disrupts circadian rhythms in humans and animals. It decreases melatonin production and increases health risks. It also decreases reproduction and foraging success in many species. Effective solutions include using full-cut off fixtures, minimizing blue light emissions, creating lighting zones, and automatic light sensors. Proper lighting design can help address this growing environmental problem.
Light pollution
This document discusses the topic of light pollution. It begins with an introduction that defines light pollution and describes how artificial light at night scatters in the atmosphere, degrading views of the night sky. It then discusses the different types of light pollution including sky glow, glare, light trespass, and overlighting. The causes of light pollution are listed as excessive and unnecessary use of outdoor lighting along with improper lighting fixtures and designs. The effects of light pollution are outlined as negative impacts on human health, disruption to nocturnal wildlife, and effects on flora. The document concludes with recommendations for mitigation of light pollution through improved lighting fixtures and light sources that direct light downward rather than polluting the night sky.
Light pollution
What is Light Pollution ?
Types of light pollution
Causes of light pollution
Effects of light pollution
Solution
Light pollution
Excessive artificial light at night can cause light pollution through light scattering in the atmosphere, glare, light trespass onto unintended areas, over-illumination, and skyglow. Light pollution disrupts wildlife behaviors like foraging, navigation, and predator avoidance, leading to increased mortality and decreased populations and body weight. It also negatively impacts humans by reducing vision, disrupting circadian rhythms, and decreasing melatonin production, potentially causing health issues. Additionally, light pollution contributes to energy waste, global warming through fossil fuel emissions, and increased air pollution by reducing atmospheric cleaning. The solution involves using efficient, directed outdoor lighting and educating the public.
Light pollution ppt.pptx
This document discusses light pollution, which refers to excessive and inappropriate artificial light that negatively impacts the environment. It defines different types of light pollution like sky glow, glare, light trespass, and overlighting. Causes are discussed like lack of shielding, timing controls, and improper fixture selection. Effects are on fauna like disrupting bird and insect behaviors, and on flora by interfering with nocturnal pollination and increasing algal blooms. In conclusion, artificial light at night disrupts natural darkness needed for rest and biological rhythms of both humans and other organisms.
Light Pollution: Kinds, Consequences, & Solutions
There are 4 types of light pollution: glare, over-illumination, light trespass, and skyglow. Light pollution wastes energy, affects human and animal health, and changes ecosystems. It can harm sea turtles and insects that use moonlight to navigate. Solutions are simple - use shielded lights that direct light downward and only where needed, and turn lights off when not in use.
Air pollution.
Components of air , Air Pollution , Types of air pollution , Sources , and how to control air pollution
Air pollution
Air pollution is a mixture of solid particles and gases that can have negative health effects. It comes from both natural sources like wildfires and dust, as well as human sources such as vehicles, factories, and burning fuels. Major pollutants include carbon dioxide, carbon monoxide, sulfur dioxide, and nitrogen dioxide. Air pollution causes problems through both primary mechanisms of direct emission and secondary mechanisms of chemical reactions. It can cause respiratory diseases and other health issues as well as environmental damage. Prevention efforts focus on reducing emissions through sustainable technologies, international agreements, and changes to individual lifestyles.
Light Pollution
Light pollution is caused by poorly designed lighting that shines light upward and outward instead of focusing it downward. There are two types of light pollution: light glare, which is unused light shining up and out, and light trespass, which lights up windows and property. Streetlights are a major contributor, accounting for 35-50% of light pollution. Light pollution wastes energy, disrupts ecosystems and human health and psychology, and interferes with astronomy. Solutions include using fully shielded fixtures, turning lights off after hours, and reducing light levels on storefronts and parking lots. Light pollution is one of the most easily addressed types of pollution.
Noise pollution
This document discusses noise pollution from various sources such as road traffic, construction activities, and aircraft. It provides examples of how noise pollution affects communities and individuals. It also presents two case studies, one analyzing traffic noise levels in Kolkata, India that were found to exceed standards, and another describing how military sonar caused the death of beached whales by disrupting their communication. Noise pollution is shown to impact human health and behavior as well as wildlife.
Light pollution
Light pollution is the excessive and inappropriate use of artificial light. It can have negative environmental impacts such as disrupting animal behaviors and migration patterns, increasing bird collisions with structures, and impacting plant growth. Light pollution wastes energy, increases air and light pollution, and interferes with astronomical observations. Solutions include improving lamp and fixture designs to direct light downward and using minimum lighting levels.
Environment; Pollution and other environmental problems
What is Environment
Major Current Environmental Problems
Different Types of Pollution
Pollution and their health effects
Index of pollution level
Global warming
Causes of global warming
Ways to reduce global warming
Overpopulation
Reasons and effects of overpopulation
Ozone layer depletion
Reasons for ozone layer depletion
Deforestation
How does deforestation cause global warming?
Waste Disposal
Light pollution
Light pollution, known as photo pollution or luminous pollution, is excessive, misdirected, or obtrusive artificial light. Light pollution is the introduction by humans, directly or indirectly, of artificial light into the environment.
Presentation on Air Pollution
This document provides an overview of various types of environmental pollution including air pollution, acid rain, greenhouse gases, smog, and their causes and effects. It discusses six major air pollutants regulated by the EPA and sources of air pollution from industries and vehicles. Acid rain is caused by sulfur and nitrogen oxides from burning fossil fuels which can damage ecosystems and infrastructure. Greenhouse gases trap heat in the atmosphere and are contributing to global warming, with consequences like sea level rise and effects on human health and agriculture. The document also outlines different pollution control technologies.
Noise Pollution
Noise pollution is a serious issue that affects human health in many ways. It is caused mainly by transportation, construction, and industrial activities. Noise above certain levels can cause stress, high blood pressure, hearing loss, and sleep disturbances. Some solutions to control noise pollution are planting trees as buffers, installing soundproofing in homes, banning loud speakers in public, locating factories and industries away from residential areas, and using noise canceling machines. Proper maintenance of machines can also help reduce noise pollution.
Noise pollution
Noise pollution occurs when unwanted sounds disrupt normal activities or exceed levels that can damage human health. Major sources of noise pollution include transportation systems, construction sites, and industrial operations. Exposure to loud noises can cause health issues like high blood pressure, hearing loss, and sleep disruption. To reduce noise pollution, barriers can be placed around loud sources, regulations can limit vehicle noise, and public education on the issue is needed.
Air pollution (Environmental Science) Grade 7
Air pollution is caused by both natural phenomena and human activities that introduce harmful chemicals, particulate matter, or biological materials into the atmosphere. It can damage human health and the environment. Primary pollutants are emitted directly, such as carbon monoxide from vehicle exhaust, while secondary pollutants form when primary pollutants interact chemically in the air to produce things like smog. Major human-caused primary air pollutants include sulfur and nitrogen oxides, carbon monoxide, volatile organic compounds, particulate matter, and others such as ammonia and radioactive pollutants.
Noise pollution Environmental Studies
Powerpoint presentation on Noise pollution, Different sources, Effects on Humans, Wildlife, Case studies on Saharanpur city and New Delhi.
Environmental issues,concerns and problems
The document discusses numerous environmental issues, concerns, and problems including:
1) Climate change, ocean deoxygenation, coral bleaching, and pollution from activities like poaching, intensive farming, and urban sprawl which are degrading the environment.
2) Issues related to energy usage like ensuring access to renewable and efficient sources of energy.
3) Public health problems caused by environmental factors such as electromagnetic radiation, toxins from activities like mining, and genetic engineering technologies and their potential impacts.
noice pollution
Any unwanted, disturbing or harmful sound that impairs or interferes with hearing, causes stress, hampers concentration and work efficiency or causes accidents called noise pollution.
Human impact on environment
Human activities can significantly impact the environment. Global warming is increasing as CO2 levels rise due to human use of machinery, warming the planet. Deforestation due to demand for land and wood products fragments habitats. Ozone depletion is caused by CFCs in aerosol cans and other products, allowing more UV rays to reach the earth. Industrial and agricultural waste, as well as noise pollution, fishing, invasive species, and resource depletion also negatively impact ecosystems. Conservation efforts like recycling, pollution control, and renewable energy can help mitigate these human effects.
Light pollution
Light pollution refers to excessive and obtrusive artificial light. There are multiple types of light pollution including light trespass, over-illumination, glare, light clutter, and sky glow. Light pollution reduces visibility of stars and can negatively impact human and animal health by increasing headaches, fatigue, stress, and anxiety. Reducing light pollution involves utilizing minimum necessary light intensities, timing lights to turn off when not needed, improving light fixture designs to better direct light where needed, adjusting light types, and reevaluating existing lighting plans. Potential solutions include full-cutoff fixtures that ensure light is directed below the horizontal.
SELENE - Light Pollution
The document discusses light pollution, which refers to excessive, misdirected, or obtrusive artificial light. It identifies the main causes of light pollution as glare, uplight, light trespass, and overlighting. Light pollution wastes energy, pollutes the night sky, and has negative effects on human health, safety, wildlife, and the environment. The document recommends proper shielding of lights, using the minimum amount of light necessary, following curfews, using the right lamp types, and not lighting areas that don't need it as ways to reduce light pollution. Implementing these technical solutions through master plans, zoning laws, and policies can help address light pollution, but lack of education, vested interests, and
Air pollution
The document discusses various types of air pollution including particulate matter, carbon monoxide, nitrogen dioxide, sulfur dioxide, ground-level ozone, and smog. It describes how these pollutants are produced and their health effects such as aggravating heart and lung disease. Both man-made sources like fossil fuel combustion from vehicles and power plants as well as natural sources like volcanoes and wildfires can release air pollutants. Ways to prevent air pollution are discussed at the individual level through reducing energy usage and recycling as well as actions by governments and companies.
Environmental Pollution
This document discusses five main types of pollution: air, water, noise, land, and radioactive. It provides details on air pollution, including its causes from industries, automobiles, and gases, as well as its effects on human health, animals, plants, and the climate. The document also summarizes water pollution as any physical, chemical, or biological change that harms water quality and life, with causes such as industrial and sewage waste. Noise pollution is defined as unwanted sound that can damage hearing and cause health issues depending on loudness, frequency, and duration of exposure.
Air Pollution
Dr. B. Victor presented on air pollution. He discussed different types of pollution sources and air pollutants. Some key effects of air pollution include damage to health, vegetation, and structures. Increased carbon dioxide contributes to global warming and climate change through the greenhouse effect. Air pollutants like sulfur dioxide and nitrogen oxides can cause acid rain when dissolved in water, harming aquatic life and soil.
Air Pollution
This document discusses air pollution and ambient air quality standards in India. It defines air pollution and lists the composition of air. It then outlines ambient air quality standards for various pollutants like sulfur dioxide, nitrogen oxides, particulate matter, lead, and carbon monoxide for different areas. The document also discusses major sources of air pollution including natural sources like volcanic eruptions and forest fires, as well as anthropogenic sources like rapid industrialization, transportation, burning of fossil fuels, deforestation, increased population, and agriculture. It further classifies air pollutants according to origin, chemical composition, and state of matter and provides examples for each classification. Finally, it outlines some common air pollutants and their effects on
Light Pollution
The transitions don't show. :( Any questions, please message me. I have most of the presentation memorized in order to make the slides less cluttered. Sorry, I forgot to write citations, but the information is very general, anyways.
Light pollution
This document discusses light pollution, which refers to the excessive or inappropriate use of outdoor lighting that reduces visibility of stars. It defines three types of light pollution: glare, light trespass, and sky glow. It shows how light pollution has increased over time through comparisons of night skies in locations like Los Angeles from 1908 to 1988. The document also demonstrates how a night sky simulator can be used to see differences in star visibility with no, low, moderate, and high levels of light pollution. Finally, it discusses how light pollution affects energy usage, safety, costs, astronomy, human health and wildlife, and provides some solutions to reduce light pollution.
More Related Content
What's hot
Air pollution
Air pollution is a mixture of solid particles and gases that can have negative health effects. It comes from both natural sources like wildfires and dust, as well as human sources such as vehicles, factories, and burning fuels. Major pollutants include carbon dioxide, carbon monoxide, sulfur dioxide, and nitrogen dioxide. Air pollution causes problems through both primary mechanisms of direct emission and secondary mechanisms of chemical reactions. It can cause respiratory diseases and other health issues as well as environmental damage. Prevention efforts focus on reducing emissions through sustainable technologies, international agreements, and changes to individual lifestyles.
Light Pollution
Light pollution is caused by poorly designed lighting that shines light upward and outward instead of focusing it downward. There are two types of light pollution: light glare, which is unused light shining up and out, and light trespass, which lights up windows and property. Streetlights are a major contributor, accounting for 35-50% of light pollution. Light pollution wastes energy, disrupts ecosystems and human health and psychology, and interferes with astronomy. Solutions include using fully shielded fixtures, turning lights off after hours, and reducing light levels on storefronts and parking lots. Light pollution is one of the most easily addressed types of pollution.
Noise pollution
This document discusses noise pollution from various sources such as road traffic, construction activities, and aircraft. It provides examples of how noise pollution affects communities and individuals. It also presents two case studies, one analyzing traffic noise levels in Kolkata, India that were found to exceed standards, and another describing how military sonar caused the death of beached whales by disrupting their communication. Noise pollution is shown to impact human health and behavior as well as wildlife.
Light pollution
Light pollution is the excessive and inappropriate use of artificial light. It can have negative environmental impacts such as disrupting animal behaviors and migration patterns, increasing bird collisions with structures, and impacting plant growth. Light pollution wastes energy, increases air and light pollution, and interferes with astronomical observations. Solutions include improving lamp and fixture designs to direct light downward and using minimum lighting levels.
Environment; Pollution and other environmental problems
What is Environment
Major Current Environmental Problems
Different Types of Pollution
Pollution and their health effects
Index of pollution level
Global warming
Causes of global warming
Ways to reduce global warming
Overpopulation
Reasons and effects of overpopulation
Ozone layer depletion
Reasons for ozone layer depletion
Deforestation
How does deforestation cause global warming?
Waste Disposal
Light pollution
Light pollution, known as photo pollution or luminous pollution, is excessive, misdirected, or obtrusive artificial light. Light pollution is the introduction by humans, directly or indirectly, of artificial light into the environment.
Presentation on Air Pollution
This document provides an overview of various types of environmental pollution including air pollution, acid rain, greenhouse gases, smog, and their causes and effects. It discusses six major air pollutants regulated by the EPA and sources of air pollution from industries and vehicles. Acid rain is caused by sulfur and nitrogen oxides from burning fossil fuels which can damage ecosystems and infrastructure. Greenhouse gases trap heat in the atmosphere and are contributing to global warming, with consequences like sea level rise and effects on human health and agriculture. The document also outlines different pollution control technologies.
Noise Pollution
Noise pollution is a serious issue that affects human health in many ways. It is caused mainly by transportation, construction, and industrial activities. Noise above certain levels can cause stress, high blood pressure, hearing loss, and sleep disturbances. Some solutions to control noise pollution are planting trees as buffers, installing soundproofing in homes, banning loud speakers in public, locating factories and industries away from residential areas, and using noise canceling machines. Proper maintenance of machines can also help reduce noise pollution.
Noise pollution
Noise pollution occurs when unwanted sounds disrupt normal activities or exceed levels that can damage human health. Major sources of noise pollution include transportation systems, construction sites, and industrial operations. Exposure to loud noises can cause health issues like high blood pressure, hearing loss, and sleep disruption. To reduce noise pollution, barriers can be placed around loud sources, regulations can limit vehicle noise, and public education on the issue is needed.
Air pollution (Environmental Science) Grade 7
Air pollution is caused by both natural phenomena and human activities that introduce harmful chemicals, particulate matter, or biological materials into the atmosphere. It can damage human health and the environment. Primary pollutants are emitted directly, such as carbon monoxide from vehicle exhaust, while secondary pollutants form when primary pollutants interact chemically in the air to produce things like smog. Major human-caused primary air pollutants include sulfur and nitrogen oxides, carbon monoxide, volatile organic compounds, particulate matter, and others such as ammonia and radioactive pollutants.
Noise pollution Environmental Studies
Powerpoint presentation on Noise pollution, Different sources, Effects on Humans, Wildlife, Case studies on Saharanpur city and New Delhi.
Environmental issues,concerns and problems
The document discusses numerous environmental issues, concerns, and problems including:
1) Climate change, ocean deoxygenation, coral bleaching, and pollution from activities like poaching, intensive farming, and urban sprawl which are degrading the environment.
2) Issues related to energy usage like ensuring access to renewable and efficient sources of energy.
3) Public health problems caused by environmental factors such as electromagnetic radiation, toxins from activities like mining, and genetic engineering technologies and their potential impacts.
noice pollution
Any unwanted, disturbing or harmful sound that impairs or interferes with hearing, causes stress, hampers concentration and work efficiency or causes accidents called noise pollution.
Human impact on environment
Human activities can significantly impact the environment. Global warming is increasing as CO2 levels rise due to human use of machinery, warming the planet. Deforestation due to demand for land and wood products fragments habitats. Ozone depletion is caused by CFCs in aerosol cans and other products, allowing more UV rays to reach the earth. Industrial and agricultural waste, as well as noise pollution, fishing, invasive species, and resource depletion also negatively impact ecosystems. Conservation efforts like recycling, pollution control, and renewable energy can help mitigate these human effects.
Light pollution
Light pollution refers to excessive and obtrusive artificial light. There are multiple types of light pollution including light trespass, over-illumination, glare, light clutter, and sky glow. Light pollution reduces visibility of stars and can negatively impact human and animal health by increasing headaches, fatigue, stress, and anxiety. Reducing light pollution involves utilizing minimum necessary light intensities, timing lights to turn off when not needed, improving light fixture designs to better direct light where needed, adjusting light types, and reevaluating existing lighting plans. Potential solutions include full-cutoff fixtures that ensure light is directed below the horizontal.
SELENE - Light Pollution
The document discusses light pollution, which refers to excessive, misdirected, or obtrusive artificial light. It identifies the main causes of light pollution as glare, uplight, light trespass, and overlighting. Light pollution wastes energy, pollutes the night sky, and has negative effects on human health, safety, wildlife, and the environment. The document recommends proper shielding of lights, using the minimum amount of light necessary, following curfews, using the right lamp types, and not lighting areas that don't need it as ways to reduce light pollution. Implementing these technical solutions through master plans, zoning laws, and policies can help address light pollution, but lack of education, vested interests, and
Air pollution
The document discusses various types of air pollution including particulate matter, carbon monoxide, nitrogen dioxide, sulfur dioxide, ground-level ozone, and smog. It describes how these pollutants are produced and their health effects such as aggravating heart and lung disease. Both man-made sources like fossil fuel combustion from vehicles and power plants as well as natural sources like volcanoes and wildfires can release air pollutants. Ways to prevent air pollution are discussed at the individual level through reducing energy usage and recycling as well as actions by governments and companies.
Environmental Pollution
This document discusses five main types of pollution: air, water, noise, land, and radioactive. It provides details on air pollution, including its causes from industries, automobiles, and gases, as well as its effects on human health, animals, plants, and the climate. The document also summarizes water pollution as any physical, chemical, or biological change that harms water quality and life, with causes such as industrial and sewage waste. Noise pollution is defined as unwanted sound that can damage hearing and cause health issues depending on loudness, frequency, and duration of exposure.
Air Pollution
Dr. B. Victor presented on air pollution. He discussed different types of pollution sources and air pollutants. Some key effects of air pollution include damage to health, vegetation, and structures. Increased carbon dioxide contributes to global warming and climate change through the greenhouse effect. Air pollutants like sulfur dioxide and nitrogen oxides can cause acid rain when dissolved in water, harming aquatic life and soil.
Air Pollution
This document discusses air pollution and ambient air quality standards in India. It defines air pollution and lists the composition of air. It then outlines ambient air quality standards for various pollutants like sulfur dioxide, nitrogen oxides, particulate matter, lead, and carbon monoxide for different areas. The document also discusses major sources of air pollution including natural sources like volcanic eruptions and forest fires, as well as anthropogenic sources like rapid industrialization, transportation, burning of fossil fuels, deforestation, increased population, and agriculture. It further classifies air pollutants according to origin, chemical composition, and state of matter and provides examples for each classification. Finally, it outlines some common air pollutants and their effects on
What's hot (20)
Environment; Pollution and other environmental problems
Environment; Pollution and other environmental problems
Viewers also liked
Light Pollution
The transitions don't show. :( Any questions, please message me. I have most of the presentation memorized in order to make the slides less cluttered. Sorry, I forgot to write citations, but the information is very general, anyways.
Light pollution
This document discusses light pollution, which refers to the excessive or inappropriate use of outdoor lighting that reduces visibility of stars. It defines three types of light pollution: glare, light trespass, and sky glow. It shows how light pollution has increased over time through comparisons of night skies in locations like Los Angeles from 1908 to 1988. The document also demonstrates how a night sky simulator can be used to see differences in star visibility with no, low, moderate, and high levels of light pollution. Finally, it discusses how light pollution affects energy usage, safety, costs, astronomy, human health and wildlife, and provides some solutions to reduce light pollution.
Light PowerPoint
The document discusses various topics related to light including:
1) The speed of light is approximately 227,000 kilometers per second in a vacuum and slower in other mediums like water and glass.
2) Common sources of light include thermal radiation from hot objects.
3) Different types of light pollution are described such as light trespass, over-illumination, glare, and sky glow. Light pollution can negatively impact ecosystems and animal habitats.
Noise Pollution
Noise is unwanted sound that disrupts normal activities and well-being. Common sources of noise pollution include transportation, industrial activities, construction sites, and household appliances. Noise pollution negatively impacts humans by causing health issues like hearing loss, high blood pressure, stress, and lack of sleep. It also disrupts animals by damaging their nervous systems, hindering communication and navigation, and increasing mortality rates. Noise pollution harms the environment by interfering with plant growth and bird populations. Prevention efforts include reducing vehicle noise, maintaining machines properly, and limiting loud activities in residential areas.
Dark side of light. Reducing light pollution for an eco-friendly society
The negative effects of lighting for the environment, human health and society have increasingly gained attention and various measures to reduce unwanted light have been suggested. This presentation ponders on the concept “light pollution”, presents key results from national-level survey charting public perceptions of light pollution and seeks avenues for eco-friendly solutions.
Noise pollution,sources,causes and effects
This document discusses noise pollution, including its sources, effects, and methods of control. It defines noise pollution and distinguishes it from sound. It identifies major sources of noise pollution like transportation, construction, industries, and households. It outlines the negative impacts of noise on human health, animal life, and the environment. Finally, it proposes approaches to control noise pollution by reducing it at its source, during transmission, and at the receiver end.
Air Pollution
The document discusses the causes and effects of air pollution in the United States. It states that the major sources of air pollution are motor vehicles, power generation, and industrial processes. Air pollution causes issues like global warming, acid rain, smog, and ozone depletion. It affects both human and environmental health. The document argues that educating people is key to reducing air pollution and lists several environmental groups working on this issue.
Noise Pollution
Noise Pollution is defined as any undesirable human or machine created noise which disturbs human or animal activity or balance. It is measured in decibels (dB) which is a logarithmic ratio of sound pressures. Prolonged exposure to loud noise can cause permanent hearing loss, annoyance, stress, and disrupted sleep and human performance. Noise pollution affects animals through hearing loss, physiological stress, and disruption of behavior and ecosystems. Plants are also impacted through reduced growth. Control measures include reducing noise at the source through improved machinery and mufflers, zoning of industrial areas away from homes, sound insulation of buildings, use of ear protection, legislative bans on loud noises, and planting trees.
water pollution.
Water pollution occurs when chemicals, sewage, fertilizers and other harmful substances are discharged into waterways without proper treatment. This contamination can poison drinking water and food sources for animals and humans, disrupt ecosystems, and cause health issues. The major causes of water pollution are household, industrial, and agricultural waste as well as litter and nuclear waste. To prevent further water pollution, individuals should use environmentally-friendly household products, limit pesticide and fertilizer use, avoid littering, and support education to change unsustainable habits that threaten the world's water resources for future generations.
Pollution its types, causes and effects by naveed.m
Pollution is the introduction of contaminants into the natural environment that cause adverse effects. It discusses various types of pollution like air, water, soil, noise, and light pollution. The document outlines causes like industries, vehicles, and agriculture. Effects include health impacts and ecosystem damage. It provides measures to control different types of pollution such as treating wastes, using public transport, and limiting fertilizers. The most polluted world cities include Cairo, Delhi, and Beijing. The conclusion is that reducing pollution requires going green.
Light Pollution by sophia perez
Light pollution occurs when excess artificial light illuminates the night sky, making it difficult to see stars and increasing energy waste. It is caused by sources like street lights that emit light upwards and result in air glow over cities. Some ways to reduce light pollution include using light shields to point lights downward more efficiently, using red lights for activities like star gazing, and turning off unnecessary lights.
Light pollution
My presentation in the Discover the Cosmos Conference (Volos, Greece - 2013) about an inquiry based scenario about light pollution.
Stress & Gastrointestinal Problems
This ppt gives an overview of stress response and its effects on the gastrointestinal system.
Dr B Ravinder Reddy
Hyderabad
Land pollution
A presentation on "Land pollution"
Here you will gather knowledge about:
1. What is Land pollution?
2. Causes of Land pollution.
3. Effects of Land pollution.
4. Solution to Land pollution (recommendation).
Environment light pollution
The document discusses the problem of light pollution from artificial lights and presents some solutions. It defines different types of light pollution like sky glow and glare that can reduce visibility. One solution presented is how a lighting manufacturer redesigned their fixture by moving the light bulb up under an opaque cap, which concealed glare and reduced light pollution while still providing good illumination with less watts. In general, the document advocates for reducing light pollution to preserve natural night skies and nocturnal environments.
LAND POLLUTION
Land pollution occurs when human activities degrade or destroy the quality and productivity of the earth's surface and soil. Major causes of land pollution include deforestation, soil erosion from lack of vegetation, land conversion that alters the natural properties of the land, mining activities, overcrowded landfills, construction activities, and nuclear waste. The effects of land pollution are soil pollution, decreased agricultural output, change in climate patterns, and negative environmental impacts like increased global warming and irregular rainfall. While land pollution may not be as visible as air or water pollution, it poses serious threats and is an important issue that needs to be addressed.
Water pollution slideshare
The document discusses various causes and effects of water pollution. It notes that 2 million tons of waste are discharged daily into water worldwide. Unsafe water causes diseases and millions of deaths annually, especially among children. Sources of water pollution include sewage, agricultural and industrial waste, pathogens, organic and inorganic contaminants, trash, and thermal pollution. This disrupts ecosystems and can poison wildlife and humans. Solutions discussed include wastewater treatment, engineering approaches, legislation, and individual conservation efforts.
Types of pollution- noise pollution -
Noise pollution is caused by various sources like industries, transportation, social events, and construction activities. It can negatively impact human health by causing hearing loss, cardiovascular issues, and sleep disorders. It also disturbs wildlife. The Indian constitution obligates the government to protect the environment. Laws like the Air and Environment Protection Acts define noise as a type of air pollution. The Supreme Court has upheld reasonable restrictions on noise to prevent nuisance. Controlling noise pollution requires enforcement of strict regulations as well as public awareness campaigns about its health impacts.
Pollution i
The document discusses various environmental issues including pollution, conservation of resources, overpopulation, and sustainable development. It describes different types of pollution such as air, water, noise, soil, and light pollution. The major sources of pollution identified are chemical plants, industrial factories, mining, deforestation, and high population density. The document then focuses on air pollution and water pollution - their causes, effects, and methods of control. Solid waste management and different disposal methods like recycling, landfills, and incineration are also covered.
Sound (Noise) Pollution
Sound (Noise) Pollution-
Sound & Noise
Measurement
Harmful Effects of Noise Pollution
Equipment used for Noise Measurment
Viewers also liked (20)
Dark side of light. Reducing light pollution for an eco-friendly society
Dark side of light. Reducing light pollution for an eco-friendly society
Pollution its types, causes and effects by naveed.m
Pollution its types, causes and effects by naveed.m
Similar to Light pollution
Outdoor Light Pollution Reduction.pptx
Outdoor light pollution is caused by excessive and improper use of artificial lighting. It has negative impacts on human health, wildlife, and the environment. Light pollution can be reduced through improved lighting fixtures that direct light downward, using full-cut off street lights, installing occupancy sensors, and choosing light sources like sodium lamps that are more efficient and emit light at specific wavelengths. Proper lighting design and maintenance practices are needed to mitigate light pollution and its effects.
Light Pollution.pptx
Light pollution is excessive artificial light produced by human activities that can negatively impact the environment, wildlife, and human health. It generates significant costs, around $7 billion annually in the US, by harming wildlife, health, astronomy, and wasting energy. Light pollution comes from outdoor lighting, urbanization, transportation, and industrialization. There are different types of light pollution including glare, light trespass, sky glow, and overlighting. Light pollution disrupts behaviors of insects, fish, birds and bats and causes migratory obstacles, wasting energy. It also affects plant growth and ecosystem services. While some species may adapt, many light-sensitive species could be lost. Solutions include using fully shielded, directed lighting fixtures,
Final gs ch 11 light pollution
This document discusses light pollution, defining it as the alteration of natural light levels due to artificial light sources. It is most severe in densely populated, industrialized areas of North America, Europe, Japan, and major Middle Eastern and North African cities. Light pollution comes from various exterior and interior lighting sources and has negative effects on the natural environment, humans, and animals. It disrupts ecosystems, increases greenhouse gases, and harms wildlife navigation, behaviors, and food sources. The document recommends reducing light pollution by using dimmer, targeted lighting and motion sensors to turn off unnecessary fixtures.
Light pollution
Light pollution is excessive or obtrusive artificial light that has negative impacts. It comes in two main types - annoying light that intrudes on natural settings, and excessive light that can cause discomfort or health issues. Types of light pollution include light trespass onto neighboring properties, overillumination that wastes energy, glare that impairs vision, light clutter that can distract or cause accidents, and sky glow above populated areas. Consequences are effects on human health like increased stress and cancer risk, disruption of ecosystems by confusing wildlife and altering predator-prey dynamics, hindering astronomy by reducing star visibility, and wasting energy. Reduction methods center on using minimum light intensity for the task, automatic shut-off when not needed, fully
Environment pollution
This document discusses various types of environmental pollution including water, air, soil, noise, light, radioactive and thermal pollution. It defines each type of pollution and provides their sources and effects on plants and ecosystems. Soil pollution occurs from chemical spills and leaks, contaminating the soil and making it unsuitable for agriculture. Noise pollution comes from vehicles, construction machinery and other human sources, and can interfere with plant pollination. Light pollution prevents zooplankton from controlling algae blooms. Radioactive pollution from minerals and nuclear accidents can weaken plant seeds and cause mutations. Thermal pollution from power plants and industry raises water temperatures, reducing dissolved oxygen and increasing toxicity, disrupting aquatic ecosystems.
Recon
Artificial night lighting disorients and misorients sea turtle hatchlings and migratory birds. When hatchlings emerge from their nests, lighting causes them to crawl in circles or away from the ocean. This exposes them to exhaustion, predators and other dangers. For nesting female turtles, lighting deters them from beaches and concentrates nesting in fewer areas, increasing risks to eggs and hatchlings. Cities have implemented "lights out" campaigns during migration seasons to reduce impacts by dimming building lights. Management strategies aim to minimize unnecessary artificial lighting near beaches and migratory paths.
Light Pollution
Light pollution is excessive and misdirected artificial light that negatively impacts wildlife, human health, and astronomy. It is caused by wasted light that illuminates areas where it is not needed, such as light shining into neighbors' windows or up into the sky. Outdoor lighting is commonly used for safety and security purposes but can be designed and directed better to reduce light pollution effects. Tips for reducing light pollution include using motion sensors, low-wattage bulbs, and proper shielding to direct light only where it is needed.
Light Pollution .pdf
Light pollution is the alteration of natural night lighting caused by excessive artificial light. It wastes energy, harms human health and ecosystems, and obscures views of the stars. It disrupts animal behavior and navigation, especially for migratory birds that use stars to guide migration. Birds are attracted to and confused by bright lights, causing collisions with structures. Organizations like FLAP estimate over 100 million birds are killed annually by manmade lights and structures. Solutions involve increasing awareness and using strategies like shielded, motion-activated lighting to reduce impacts on birds during migration seasons.
Air pollution soli pollution water pollution noise pollution land pollution
About pollution and their effects on earth and other porblem
12124013.ppt
Light pollution disrupts ecosystems by altering natural light levels and patterns. It can confuse animal navigation, impact predator-prey relationships, and cause physiological harm to plants and animals. Specific examples discussed include sea turtles whose nesting and hatching is disrupted by coastal lights, migratory birds that can lose their way due to light pollution, and nocturnal insects and owls that face survival challenges from bright lights. Excessive light also brings issues for some fish and can prevent cactus and other plants that rely on nighttime pollinators from reproducing if lighting prohibits flowering. While low levels may not stop photosynthesis, artificial lights that extend the day length can disrupt the natural growth patterns of trees.
Pollution
The document discusses several types of pollution including air, water, noise, soil, light, and radioactive pollution. For each type of pollution, it identifies sources, effects, and potential solutions. The key types of pollution covered are air (sources: vehicles, industry, fires), water (sources: waste, runoff, spills), noise (sources: transportation, events, machines) and their effects on human health, environment and solutions to mitigate them.
Lighting pollution
As modern environmentalists, naturalists, and medical researchers consider light pollution to be one of the fastest growing and most pervasive forms of environmental pollution; this PPT has been prepared primarily with an intent to create an awareness amongst the architect fraternity.
Light pollution
About the pollution caused due to light across the world and it seems to be our very basic need of our life.
Secondary 2 Geography-Ozone Depletion
The document discusses ozone depletion and its causes and consequences. It explains that ozone in the stratosphere protects the Earth from ultraviolet radiation, but chlorofluorocarbons released into the atmosphere break down into chlorine which destroys ozone molecules. This causes the ozone layer to thin, leaving it unable to fully screen ultraviolet rays. If the ozone layer is depleted faster than it can recover, an "ozone hole" forms. The thinning ozone allows more ultraviolet radiation to reach the Earth's surface, increasing health and environmental risks like skin cancer and disruption of marine and terrestrial ecosystems.
Environmental pollution
Presentation on Environmental Pollution. It contains 41 slides. The contents are:
Definition of Pollution
Types of Pollution
Air Pollution
Water Pollution
Noise Pollution
Nuclear Pollution
Soil Pollution
Role of an Individual to prevent pollution
Conclusion
environment pollution environment pollution .pptx
The document presents on the topic of environment pollution and discusses its five main types: water pollution, air pollution, soil pollution, noise pollution, and light pollution. Water pollution results from contaminants introduced into water bodies from sources such as inadequately treated wastewater and can degrade aquatic ecosystems and threaten public health. Air pollution occurs when harmful substances are released into the atmosphere from sources like industry and vehicles, potentially causing health issues. Soil pollution stems from industrial activity and improper waste disposal, introducing chemicals such as petroleum and heavy metals into the soil. Noise pollution arises from machines, transportation, and urban development and can disrupt wildlife and human activities. Light pollution alters natural night conditions and is linked to negative health and environmental impacts
Environmental Science - Light Pollution
The document discusses light pollution, which is excessive or misdirected artificial light that has negative consequences. There are three main types: glare, light trespass, and skyglow. Light pollution disrupts ecosystems and has adverse health effects. It can be mitigated by reducing unnecessary lighting, using covered lights that point downward, automatic timers, and preventing light trespass onto neighboring properties. While a growing issue, solutions to light pollution exist that are simple and cost-effective.
Forms of pollution
The document discusses several forms of pollution: soil contamination caused by industrial activity and agricultural chemicals; air pollution from industrial and transportation emissions, causing health issues; water pollution from discharging pollutants without treatment into water bodies; radioactive contamination from deposition of radioactive substances; noise pollution from machines and transportation disturbing humans and animals; light pollution from excessive or misdirected artificial light; and visual pollution that impairs views. It then discusses soil pollution near Naples, Italy known as the "Land of Fires", which is linked to health issues in the local population like increased cancer rates, demonstrating the health impacts of pollution.
PLS 2016: Midnight blues: the effect of blue rich white lights
There has been a lot of press recently concerning the effect of LED street lights on both humans and the surrounding
environment...
Talk by Kelly Smith, Global Lighting Applications Engineer, Thorn Lighting Ltd
Rachel noise polln
Noise pollution is the introduction of unwanted or disturbing sound that disrupts normal human or animal activity. It comes from sources like transportation, construction, industrial machinery, and loud music. Noise pollution can negatively impact human health by causing hearing loss, cardiovascular issues, and impaired mental health. It affects animals by damaging their nervous systems, interfering with communication and navigation, and reducing usable habitat. Solutions include controlling noise at its source, reducing transmission through barriers and insulation, and protecting receivers with equipment or planning.
Similar to Light pollution (20)
Air pollution soli pollution water pollution noise pollution land pollution
Air pollution soli pollution water pollution noise pollution land pollution
PLS 2016: Midnight blues: the effect of blue rich white lights
PLS 2016: Midnight blues: the effect of blue rich white lights
More from Nelson Correia
Meet our Astronomers
This document introduces four astronomers from different countries: Pedro Nunes from Portugal, Kazimieras Simonavicius from Lithuania, Ali Qushji from Turkey, and Christian Doppler from Austria. It provides basic biographical information about each astronomer and their country of origin. Contact information is also listed for students from Portugal and Lithuania who are featured in the document.
Agrupamento de Escolas Gil Paes
The document provides demographic information about the city of Salzburg, Austria, which has a total area of 270km2 and around 36,500 inhabitants distributed across 17 small towns. It then lists information about the 12 academic units in Salzburg, including the number of operating assistants, teachers, childhood educators, and students at each unit. In total, there are 48 operating assistants, 125 teachers, and 573 students across the 12 academic units.
Cartoons about Deep Sky
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
Activities about light pollution
This document summarizes the activities of a Turkish school's Comenius team focused on raising awareness about light pollution. Some of the activities included student contests to design astronaut outfits, build 3D models of space, and construct balloon rocket experiments. Students collaborated with a local university and media outlets to measure and map light pollution in their city. They created educational materials like a dictionary and cartoon explanations of scientists. The goal was to engage students in learning about light pollution and space through hands-on projects and competitions.
Sun and the Solar System
O documento apresenta uma peça de teatro realizada por alunos sobre o Sistema Solar. A peça mostra os planetas representados como personagens discutindo sobre a destruição da Terra pelos humanos e o medo de outros planetas de sofrerem o mesmo destino. Os alunos também apresentam uma música e dança sobre o Sol.
Sun
This document appears to be a presentation about science and astronomy projects conducted by students in Turkey and Europe. It discusses students participating in a mobility program in Lithuania, then researching topics like the sun, solar and lunar eclipses, and making 3D models of the Earth, Moon, and Sun. The presentation continues describing how students studied sundials, making their own and researching famous sundials in Turkey. It concludes with students making experiments about day and night and constructing amateur telescopes.
The Moon
This lesson plan aims to teach primary school students about the phases of the Moon and its effect on tides. Key points include:
- The Moon orbits Earth approximately every 28 days, appearing in different phases as it circles the planet.
- The changing shapes of the Moon are caused by the varying angles between the Moon, Earth, and Sun as the Moon revolves.
- Gravity from the Moon and Sun causes ocean tides on Earth to regularly rise and fall, with stronger tides occurring during full and new Moons.
Eratosthenes
Eratosthenes was a Greek scholar who calculated the circumference of the Earth using shadows from sticks in Alexandria and Syene. He observed that on the summer solstice, a stick in Alexandria cast a shadow while a stick in Syene did not. Knowing the distance between the cities, he calculated the circumference of the Earth to within a few percent of the actual measurement. Eratosthenes made several other contributions including accurately calculating the tilt of the Earth's axis and inventing the leap day.
Exoplanets
An exoplanet is a planet that orbits a star other than the Sun. Nearly 2000 exoplanets have been discovered orbiting other stars by detecting their gravitational influence or observing dimming of the star's light as the planet passes in front. The Kepler space telescope has been instrumental in discovering many new exoplanets using the transit method of detection, including some that may be capable of hosting life such as Gliese 581g. As exoplanet discoveries increase, interest in finding signs of life on other worlds outside our solar system continues to grow.
Nebula
Nebulae are giant clouds of dust and gas found in space where stars are formed. They can be light years across and look fuzzy in appearance. When the gas and dust in a nebula collapses under its own gravity, it forms hot, dense cores where stars ignite and shine. Some nebulae glow due to radiation from young stars, called emission nebulae. Others reflect the light of stars, known as reflection nebulae. Planetary nebulae are formed when aging stars blow off their outer layers.
Sun - Our friend or foe
The document discusses the sun's positive and negative effects on humans. Positively, the sun provides warmth, energy through photosynthesis, boosts serotonin levels and immunity. However, ultraviolet radiation from the sun can cause skin cancer, sunburns, weaken the immune system, lead to heat stroke and damage eyes and skin over time. While the sun has benefits, prolonged unprotected exposure to its UV rays poses health risks like skin cancer, so protection is recommended to harness its energy safely.
Sun
The document summarizes information about the Sun, including:
1) It is an average star that produces energy through nuclear fusion in its core and contains over 99% of the mass in the Solar System.
2) Significant variations in solar activity like sunspots and solar flares can be seen from day to day and year to year, arising from the bending and twisting of magnetic fields in the Sun's atmosphere.
3) Coronal mass ejections are powerful explosions that can eject large amounts of plasma from the Sun's corona and impact Earth's environment and technology.
Solar system
The Solar System is comprised of the Sun and objects that orbit it. It formed 4.6 billion years ago from a giant cloud. The inner terrestrial planets like Earth are rocky, while the outer giant planets like Jupiter are much larger and gaseous. The asteroid belt lies between Mars and Jupiter, containing millions of objects but only about 1% of the mass of Earth. Ceres is the largest asteroid in the belt.
Life without the Moon
If the Moon suddenly vanished:
- Earth's axis would lose stability and wobble dramatically, causing extreme temperature changes and unpredictable seasons.
- Tides would be much smaller, caused only by the Sun, disrupting marine life and coastal ecosystems.
- Earth's rotation would speed up, with day lengths shortening to 8-10 hours and winds of 160-200 km/h sweeping the surface.
- Life on Earth would struggle to adapt to the entirely different environmental conditions without the stabilizing influence of the Moon.
Dive in the Sky story
Vasco tells his mother about a dream where he and his friend Claudia took a rocket trip through space. During their journey to the moon, Claudia points out light pollution on Earth which obscures the night sky in some areas. Light pollution is harmful to animals like turtles and birds. At school, Vasco's class is working on a project about light pollution called "Dive into the Sky" which aims to reduce artificial light at night to see more stars. Vasco is enjoying learning new things through the project.
Space lesson (8 - 10 grade)
The document outlines an integrated English/Astronomy lesson plan for secondary school students about space exploration. It includes vocabulary building, a timeline fill-in-the-blank exercise about major space events, dividing students into groups to write questions about the timeline, and a question/answer activity where students test each other's knowledge in a game format. The lesson aims to teach students about space topics while practicing English vocabulary and questioning skills.
Bulgaria bilateral meeting
This document outlines the program for a bilateral meeting between schools in Bulgaria and Lithuania from July 6-10, 2015. The theme of the visit was to develop integrated astronomy and English lessons for primary and secondary schools. The schedule included a guided visit to Vasil Aprilov Primary School in Ruse, Bulgaria, a workshop for teachers to prepare lesson plans, astronomy lessons for different grade levels, visits to local museums, and an excursion to the Rock Monastery of St. Dimitar Basarbovski.
Evaluation of the project
1. Students and teachers from several European countries participated in a survey to evaluate the Comenius Multilateral Project "Dive in the Sky".
2. The results showed that students found sharing the European project, learning about partner countries, exchanging experiences with foreign students, practicing astronomy and foreign languages to be mostly good or excellent.
3. Teachers rated their relationships with partners, communication, sharing tasks and organizing visits as excellent and found the support from administrators, colleagues and students to be good.
More from Nelson Correia (20)
Recently uploaded
The debris of the ‘last major merger’ is dynamically young
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
Gadgets for management of stored product pests_Dr.UPR.pdf
Insectsplayamajorroleinthedeteriorationoffoodgrainscausingbothquantitativeandqualitativelosses
Wellprovedthatnogranariescanbefilledwithgrainswithoutinsectsastheharvestedproducecontainegg(or)larvae(or)pupae(or)adultinsectinthembecauseoffieldcarryoverinfestationwhichcannotbeavoidedindevelopingcountrieslikeIndia
Simpletechnologiesfortimelydetectionofinsectsinthestoredproduceandtherebyplantimelycontrolmeasures
Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
JAMES WEBB STUDY THE MASSIVE BLACK HOLE SEEDS
The pathway(s) to seeding the massive black holes (MBHs) that exist at the heart of galaxies in the present and distant Universe remains an unsolved problem. Here we categorise, describe and quantitatively discuss the formation pathways of both light and heavy seeds. We emphasise that the most recent computational models suggest that rather than a bimodal-like mass spectrum between light and heavy seeds with light at one end and heavy at the other that instead a continuum exists. Light seeds being more ubiquitous and the heavier seeds becoming less and less abundant due the rarer environmental conditions required for their formation. We therefore examine the different mechanisms that give rise to different seed mass spectrums. We show how and why the mechanisms that produce the heaviest seeds are also among the rarest events in the Universe and are hence extremely unlikely to be the seeds for the vast majority of the MBH population. We quantify, within the limits of the current large uncertainties in the seeding processes, the expected number densities of the seed mass spectrum. We argue that light seeds must be at least 103 to 105 times more numerous than heavy seeds to explain the MBH population as a whole. Based on our current understanding of the seed population this makes heavy seeds (Mseed > 103 M⊙) a significantly more likely pathway given that heavy seeds have an abundance pattern than is close to and likely in excess of 10−4 compared to light seeds. Finally, we examine the current state-of-the-art in numerical calculations and recent observations and plot a path forward for near-future advances in both domains.
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
We present the JWST discovery of SN 2023adsy, a transient object located in a host galaxy JADES-GS
+
53.13485
−
27.82088
with a host spectroscopic redshift of
2.903
±
0.007
. The transient was identified in deep James Webb Space Telescope (JWST)/NIRCam imaging from the JWST Advanced Deep Extragalactic Survey (JADES) program. Photometric and spectroscopic followup with NIRCam and NIRSpec, respectively, confirm the redshift and yield UV-NIR light-curve, NIR color, and spectroscopic information all consistent with a Type Ia classification. Despite its classification as a likely SN Ia, SN 2023adsy is both fairly red (
�
(
�
−
�
)
∼
0.9
) despite a host galaxy with low-extinction and has a high Ca II velocity (
19
,
000
±
2
,
000
km/s) compared to the general population of SNe Ia. While these characteristics are consistent with some Ca-rich SNe Ia, particularly SN 2016hnk, SN 2023adsy is intrinsically brighter than the low-
�
Ca-rich population. Although such an object is too red for any low-
�
cosmological sample, we apply a fiducial standardization approach to SN 2023adsy and find that the SN 2023adsy luminosity distance measurement is in excellent agreement (
≲
1
�
) with
Λ
CDM. Therefore unlike low-
�
Ca-rich SNe Ia, SN 2023adsy is standardizable and gives no indication that SN Ia standardized luminosities change significantly with redshift. A larger sample of distant SNe Ia is required to determine if SN Ia population characteristics at high-
�
truly diverge from their low-
�
counterparts, and to confirm that standardized luminosities nevertheless remain constant with redshift.
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...
Context. The observation of several L-band emission sources in the S cluster has led to a rich discussion of their nature. However, a definitive answer to the classification of the dusty objects requires an explanation for the detection of compact Doppler-shifted Brγ emission. The ionized hydrogen in combination with the observation of mid-infrared L-band continuum emission suggests that most of these sources are embedded in a dusty envelope. These embedded sources are part of the S-cluster, and their relationship to the S-stars is still under debate. To date, the question of the origin of these two populations has been vague, although all explanations favor migration processes for the individual cluster members. Aims. This work revisits the S-cluster and its dusty members orbiting the supermassive black hole SgrA* on bound Keplerian orbits from a kinematic perspective. The aim is to explore the Keplerian parameters for patterns that might imply a nonrandom distribution of the sample. Additionally, various analytical aspects are considered to address the nature of the dusty sources. Methods. Based on the photometric analysis, we estimated the individual H−K and K−L colors for the source sample and compared the results to known cluster members. The classification revealed a noticeable contrast between the S-stars and the dusty sources. To fit the flux-density distribution, we utilized the radiative transfer code HYPERION and implemented a young stellar object Class I model. We obtained the position angle from the Keplerian fit results; additionally, we analyzed the distribution of the inclinations and the longitudes of the ascending node. Results. The colors of the dusty sources suggest a stellar nature consistent with the spectral energy distribution in the near and midinfrared domains. Furthermore, the evaporation timescales of dusty and gaseous clumps in the vicinity of SgrA* are much shorter ( 2yr) than the epochs covered by the observations (≈15yr). In addition to the strong evidence for the stellar classification of the D-sources, we also find a clear disk-like pattern following the arrangements of S-stars proposed in the literature. Furthermore, we find a global intrinsic inclination for all dusty sources of 60 ± 20◦, implying a common formation process. Conclusions. The pattern of the dusty sources manifested in the distribution of the position angles, inclinations, and longitudes of the ascending node strongly suggests two different scenarios: the main-sequence stars and the dusty stellar S-cluster sources share a common formation history or migrated with a similar formation channel in the vicinity of SgrA*. Alternatively, the gravitational influence of SgrA* in combination with a massive perturber, such as a putative intermediate mass black hole in the IRS 13 cluster, forces the dusty objects and S-stars to follow a particular orbital arrangement. Key words. stars: black holes– stars: formation– Galaxy: center– galaxies: star formation
Pests of Storage_Identification_Dr.UPR.pdf
InIndia-post-harvestlosses-unscientificstorage,insects,rodents,micro-organismsetc.,accountforabout10percentoftotalfoodgrains
Graininfestation
Directdamage
Indirectly
•theexuviae,skin,deadinsects
•theirexcretawhichmakefoodunfitforhumanconsumption
About600speciesofinsectshavebeenassociatedwithstoredgrainproducts
100speciesofinsectpestsofstoredproductscauseeconomiclosses
Immersive Learning That Works: Research Grounding and Paths Forward
We will metaverse into the essence of immersive learning, into its three dimensions and conceptual models. This approach encompasses elements from teaching methodologies to social involvement, through organizational concerns and technologies. Challenging the perception of learning as knowledge transfer, we introduce a 'Uses, Practices & Strategies' model operationalized by the 'Immersive Learning Brain' and ‘Immersion Cube’ frameworks. This approach offers a comprehensive guide through the intricacies of immersive educational experiences and spotlighting research frontiers, along the immersion dimensions of system, narrative, and agency. Our discourse extends to stakeholders beyond the academic sphere, addressing the interests of technologists, instructional designers, and policymakers. We span various contexts, from formal education to organizational transformation to the new horizon of an AI-pervasive society. This keynote aims to unite the iLRN community in a collaborative journey towards a future where immersive learning research and practice coalesce, paving the way for innovative educational research and practice landscapes.
Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
Wereport the study of a huge optical intraday flare on 2021 November 12 at 2 a.m. UT in the blazar OJ287. In the binary black hole model, it is associated with an impact of the secondary black hole on the accretion disk of the primary. Our multifrequency observing campaign was set up to search for such a signature of the impact based on a prediction made 8 yr earlier. The first I-band results of the flare have already been reported by Kishore et al. (2024). Here we combine these data with our monitoring in the R-band. There is a big change in the R–I spectral index by 1.0 ±0.1 between the normal background and the flare, suggesting a new component of radiation. The polarization variation during the rise of the flare suggests the same. The limits on the source size place it most reasonably in the jet of the secondary BH. We then ask why we have not seen this phenomenon before. We show that OJ287 was never before observed with sufficient sensitivity on the night when the flare should have happened according to the binary model. We also study the probability that this flare is just an oversized example of intraday variability using the Krakow data set of intense monitoring between 2015 and 2023. We find that the occurrence of a flare of this size and rapidity is unlikely. In machine-readable Tables 1 and 2, we give the full orbit-linked historical light curve of OJ287 as well as the dense monitoring sample of Krakow.
Alternate Wetting and Drying - Climate Smart Agriculture
Alternate Wetting and Drying - Climate Smart AgricultureInternational Food Policy Research Institute- South Asia Office
PPT on Alternate Wetting and Drying presented at the three-day 'Training and Validation Workshop on Modules of Climate Smart Agriculture (CSA) Technologies in South Asia' workshop on April 22, 2024. Summary Of transcription and Translation.pdf
Hello Everyone Here We are Sharing You with The process of protien Synthesis in very short points you will be Able to understand It Very well
Anti-Universe And Emergent Gravity and the Dark Universe
Recent theoretical progress indicates that spacetime and gravity emerge together from the entanglement structure of an underlying microscopic theory. These ideas are best understood in Anti-de Sitter space, where they rely on the area law for entanglement entropy. The extension to de Sitter space requires taking into account the entropy and temperature associated with the cosmological horizon. Using insights from string theory, black hole physics and quantum information theory we argue that the positive dark energy leads to a thermal volume law contribution to the entropy that overtakes the area law precisely at the cosmological horizon. Due to the competition between area and volume law entanglement the microscopic de Sitter states do not thermalise at sub-Hubble scales: they exhibit memory effects in the form of an entropy displacement caused by matter. The emergent laws of gravity contain an additional ‘dark’ gravitational force describing the ‘elastic’ response due to the entropy displacement. We derive an estimate of the strength of this extra force in terms of the baryonic mass, Newton’s constant and the Hubble acceleration scale a0 = cH0, and provide evidence for the fact that this additional ‘dark gravity force’ explains the observed phenomena in galaxies and clusters currently attributed to dark matter.
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
Applied Science: Thermodynamics, Laws & Methodology.pdf
When I was asked to give a companion lecture in support of ‘The Philosophy of Science’ (https://shorturl.at/4pUXz) I decided not to walk through the detail of the many methodologies in order of use. Instead, I chose to employ a long standing, and ongoing, scientific development as an exemplar. And so, I chose the ever evolving story of Thermodynamics as a scientific investigation at its best.
Conducted over a period of >200 years, Thermodynamics R&D, and application, benefitted from the highest levels of professionalism, collaboration, and technical thoroughness. New layers of application, methodology, and practice were made possible by the progressive advance of technology. In turn, this has seen measurement and modelling accuracy continually improved at a micro and macro level.
Perhaps most importantly, Thermodynamics rapidly became a primary tool in the advance of applied science/engineering/technology, spanning micro-tech, to aerospace and cosmology. I can think of no better a story to illustrate the breadth of scientific methodologies and applications at their best.
11.1 Role of physical biological in deterioration of grains.pdf
Storagedeteriorationisanyformoflossinquantityandqualityofbio-materials.
Themajorcausesofdeteriorationinstorage
•Physical
•Biological
•Mechanical
•Chemical
Storageonlypreservesquality.Itneverimprovesquality.
Itisadvisabletostartstoragewithqualityfoodproduct.Productwithinitialpoorqualityquicklydepreciates
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
Class 10 human eye notes physics
Handwritten best quality
Recently uploaded (20)
The debris of the ‘last major merger’ is dynamically young
The debris of the ‘last major merger’ is dynamically young
Gadgets for management of stored product pests_Dr.UPR.pdf
Gadgets for management of stored product pests_Dr.UPR.pdf
Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...
Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...
Immersive Learning That Works: Research Grounding and Paths Forward
Immersive Learning That Works: Research Grounding and Paths Forward
Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
Alternate Wetting and Drying - Climate Smart Agriculture
Alternate Wetting and Drying - Climate Smart Agriculture
Anti-Universe And Emergent Gravity and the Dark Universe
Anti-Universe And Emergent Gravity and the Dark Universe
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Applied Science: Thermodynamics, Laws & Methodology.pdf
Applied Science: Thermodynamics, Laws & Methodology.pdf
11.1 Role of physical biological in deterioration of grains.pdf
11.1 Role of physical biological in deterioration of grains.pdf
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
Light pollution
- 1. PRIMARY SCHOOL "VASIL APRILOV" - RUSE DIVE IN THE SKY
- 2. The Earth from de International Space Station
- 3. The sky from the Earth
- 5. LIGHT POLLUTION • Excessive and inappropriate use of artificial light A town during the blackout The same town after The Blackout
- 6. Light pollution, also known as photopollution or luminous pollution, is excessive, misdirected, or obtrusive artificial light. Pollution is the adding-of/added light itself, in analogy to added sound, carbon dioxide, etc. Adverse consequences are multiple; some of them may not be known yet.
- 7. Scientific definitions thus include the following: • Degradation of photic habitat by artificial light. • Alteration of natural light levels in the outdoor environment owing to artificial light sources. • Light pollution is the alteration of light levels in the outdoor environment (from those present naturally) due to man-made sources of light. Indoor light pollution is such alteration of light levels in the indoor environment due to sources of light, which compromises human health. • Light pollution is the introduction by humans, directly or indirectly, of artificial light into the environment.
- 8. Light pollution is a side effect of industrial civilization. Its sources include building exterior and interior lighting, advertising, commercial properties, offices, factories, streetlights, and illuminated sporting venues. It is most severe in highly industrialized, densely populated areas of North America, Europe, and Japan and in major cities in the Middle East and North Africa like Tehran and Cairo, but even relatively small amounts of light can be noticed and create problems.
- 9. CAUSES • Inadequate design of lamps and projectors. • Incorrect installation of lamps and spotlights, emitting light far beyond its target or zone of influence, without any useful effect.
- 10. LIGHT TRESPASS Light trespass occurs when unwanted light enters one's property, for instance, by shining over a neighbor's fence. A common light trespass problem occurs when a strong light enters the window of one's home from the outside, causing problems such as sleep deprivation or the blocking of an evening view. A number of cities in the U.S. have developed standards for outdoor lighting to protect the rights of their citizens against light trespass. To assist them, the International Dark-Sky Association has developed a set of model lighting ordinances
- 11. CONSEQUENCES • Waste of energy • Waste of money • Air pollution • Impact on living beings • Obstacle to astronomical observations.
- 13. LIGHT POLLUTION AND WILDLIFE • Os animais e as plantas vivem de acordo com o ciclo de 24 horas do nosso planeta (ritmo circadiano). • Os humanos podem sentir uma alteração no seu ritmo circadiano quando viajam de avião entre zonas com diferentes fusos horários. Esta alteração é caracterizada por sonolência, letargia ou uma sensação geral de que algo não está bem.
- 14. LIGHT POLLUTION AND WILDLIFE • Animal behavior are also altered when exposed to too much artificial light at night (light pollution). • Behaviors affected by the duration of the night: • migration; • sleep; • food search
- 15. LIGHT POLLUTION- BIRDS • http://vimeo.com/54089280 • Many species of birds migrate or hunt overnight. • This dependence of the darkness makes them extremely vulnerable to bright lights in areas that are naturally dark. Birds can be attracted to the light sources and be fixed in the light beam.
- 16. LIGHT POLLUTION - BIRDS • Light pollution is a major threat to birds, especially seabirds at the time the juveniles leave the nests. • The birds are attracted by the lights, they are encandeadas and collide with buildings, power lines and vehicles, whose concentration is increasing in coastal areas due to urban and industrial development.
- 17. LIGHT POLLUTION - BIRDS • Die each year about 100 million birds in North America in collisions with lighted buildings and towers; • Not wanting to fly back to the dark areas, continue to fly toward the spotlight until they are exhausted, fall or find a predator; • Artificial lights can still take migratory birds out of your route, not reaching its natural destination; • Seabirds collide with the headlights, wind turbines and floating platforms at sea.
- 18. LIGHT POLLUTION - REPTILES • Reptiles are strongly affected by light pollution. • For example, sea turtles like to create their nests in remote and very dark beaches. • Coastal lights interfere with your ability to find safe nesting areas for their eggs.
- 20. LIGHT POLLUTION- REPTILES • Artificial lights can confuse the young and bring them to crawl away from the ocean toward the roads or communities. • If you do not find their way back to the ocean, can become exhausted or dehydrated and die.
- 21. SOCIAL AND HEALTH EFFECTS • The light enters by the windows. It causes fatigue, insomnia and stress. • Harms public safety, since the powerful light can cause temporary blindness for drivers of vehicles.
- 22. PREVENTION
- 23. LIGHT CORRECTION • http://www.need-less.org.uk/ • Each bulb or the projector could reflect down light that would go up, illuminating more with the same lamp.
- 25. • We could also illuminate the same area using a lower wattage bulb • We can do even better, using more efficient reflector and energy bulbs, with even greater savings.
- 28. WE WANT TO SEE THE STARS!!!
- 32. DURING THE NIGHT... AND DURING THE DAY ... Lamps in Ruse, Bulgaria
- 33. LINKS • http://www.slideshare.net/eufisica/palestra-sobre-poluio-luminosa-30356496#btnPrevious • http://dsr.nuclio.pt/ • http://www.miguelclaro.com/wp/ • http://www.terramater.pt/?pag=148 • http://ambiente-legal.blogspot.com/2009/06/poluicao-luminosa_15.html • http://pascal.iseg.utl.pt/~ncrato/Expresso/PoluicaoLuminosa.pdf • http://ecosfera.publico.clix.pt/noticia.aspx?id=1388443 • http://www.reuters.com/article/idUSLI15313320080819 • http://www.portalsaofrancisco.com.br/alfa/meio-ambiente-poluicao-luminosa/poluicao- luminosa-4.php