Extension on wavelenghts and the spectrum
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Electromagnetic radiation, including light, comes in a wide range of wavelengths and is used by astronomers to study astronomical objects. Radio waves have the longest wavelengths while gamma rays have the shortest. Astronomers use spectroscopes to separate starlight into colors and study spectra, allowing them to determine properties of stars like their composition, temperature, and luminosity. Looking at objects across different wavelengths provides additional information.
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ScienceShare.co.uk Shared Resource
The document discusses the electromagnetic spectrum and how astronomers use electromagnetic radiation like light to study astronomical objects. It notes that radio waves have the longest wavelengths while gamma rays have the shortest. Astronomers use tools like spectroscopes to separate starlight into colors and study the spectra of stars to determine their composition, temperature, and luminosity. Looking at objects across different wavelengths provides additional information.
The electromagnetic spectrum
The electromagnetic spectrum describes the range of wavelengths or frequencies over which electromagnetic radiation extends. Radio waves are a type of electromagnetic radiation with wavelengths longer than infrared light that are used for radio communication. The Hubble, Spitzer, and Chandra telescopes observe different wavelengths of light from space, including visible light, infrared, and X-rays, in order to take sharp pictures of astronomical objects like planets, stars, and galaxies. Telescopes are placed in space to obtain clearer views of the universe free from atmospheric interference and to observe wavelengths like X-rays and infrared that are blocked by Earth's atmosphere. Astronomers look for water on other planets because water is currently the best known indicator for the potential existence of life, and SETI stands
Light: Spectroscopy and Atom
Spectroscopy is the study of light in different wavelengths. It involves dispersing an object's light into its component colors to infer physical properties like temperature, mass, and composition. There are three main types of spectra: continuous spectra from hot gases/solids with a wide range of wavelengths, absorption line spectra which appear as dark lines on a continuous spectrum where light passes through cool gas, and emission line spectra which are bright lines corresponding to photons emitted when excited atoms in a gas relax to lower energy states. Atomic spectroscopy has applications like identifying elements based on their unique emission spectra and discovering new elements by analyzing absorption spectra from celestial objects.
Electromagnetic spectrum-power point
A. Electromagnetic waves travel as vibrations in electrical and magnetic fields at the speed of light without a medium. They have properties of both waves and particles.
B. The electromagnetic spectrum orders electromagnetic waves from radio waves to gamma rays based on increasing frequency and decreasing wavelength. Different electromagnetic waves are used for technologies like WiFi, infrared devices, MRI, and X-rays.
The Electromagnetic Spectrum 2011
The document discusses the electromagnetic spectrum, describing the characteristics of each type of electromagnetic wave including radio waves, microwaves, infrared light, visible light, ultraviolet waves, X-rays, and gamma rays. It provides information on the frequency and wavelength ranges, what can be learned from each type of wave about Earth and the universe, and examples of NASA missions that utilize each section of the electromagnetic spectrum.
03 The Stars Mc Neely 2008
1. Stellar parallax is a method used to measure the distances to nearby stars by observing how their positions shift relative to more distant background stars over the course of 6 months as Earth orbits the Sun.
2. When starlight is passed through a prism or spectroscope, it is separated into a spectrum of colors that can reveal what chemical elements the star is made of. Different elements produce unique patterns of spectral lines.
3. By analyzing the absorption line spectra of stars, astronomers have identified over 70 chemical elements present in stars including hydrogen, helium, and metals like iron. A star's temperature can also be estimated from its spectral class.
Remote sensing
This document provides an overview of key concepts in remote sensing including:
- The electromagnetic spectrum and how different wavelengths are used in remote sensing.
- How electromagnetic radiation interacts with the atmosphere, including scattering, absorption, and transmission.
- How radiation interacts with the Earth's surface through reflection, absorption, and transmission.
- Spectral reflectance curves and how the reflectance of materials like vegetation, soil, and water vary across the electromagnetic spectrum.
- The basic principles and elements of remote sensing systems, from the energy source and sensors to data analysis and applications.
Electromagnetic Radiation
This document summarizes different types of electromagnetic radiation, including light, radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. It discusses their properties such as wavelength and frequency. Key topics covered include how light travels in waves, the electromagnetic spectrum, uses of different wavelengths such as communication and food heating, and properties of visible light like color.
Recommended
ScienceShare.co.uk Shared Resource
The document discusses the electromagnetic spectrum and how astronomers use electromagnetic radiation like light to study astronomical objects. It notes that radio waves have the longest wavelengths while gamma rays have the shortest. Astronomers use tools like spectroscopes to separate starlight into colors and study the spectra of stars to determine their composition, temperature, and luminosity. Looking at objects across different wavelengths provides additional information.
The electromagnetic spectrum
The electromagnetic spectrum describes the range of wavelengths or frequencies over which electromagnetic radiation extends. Radio waves are a type of electromagnetic radiation with wavelengths longer than infrared light that are used for radio communication. The Hubble, Spitzer, and Chandra telescopes observe different wavelengths of light from space, including visible light, infrared, and X-rays, in order to take sharp pictures of astronomical objects like planets, stars, and galaxies. Telescopes are placed in space to obtain clearer views of the universe free from atmospheric interference and to observe wavelengths like X-rays and infrared that are blocked by Earth's atmosphere. Astronomers look for water on other planets because water is currently the best known indicator for the potential existence of life, and SETI stands
Light: Spectroscopy and Atom
Spectroscopy is the study of light in different wavelengths. It involves dispersing an object's light into its component colors to infer physical properties like temperature, mass, and composition. There are three main types of spectra: continuous spectra from hot gases/solids with a wide range of wavelengths, absorption line spectra which appear as dark lines on a continuous spectrum where light passes through cool gas, and emission line spectra which are bright lines corresponding to photons emitted when excited atoms in a gas relax to lower energy states. Atomic spectroscopy has applications like identifying elements based on their unique emission spectra and discovering new elements by analyzing absorption spectra from celestial objects.
Electromagnetic spectrum-power point
A. Electromagnetic waves travel as vibrations in electrical and magnetic fields at the speed of light without a medium. They have properties of both waves and particles.
B. The electromagnetic spectrum orders electromagnetic waves from radio waves to gamma rays based on increasing frequency and decreasing wavelength. Different electromagnetic waves are used for technologies like WiFi, infrared devices, MRI, and X-rays.
The Electromagnetic Spectrum 2011
The document discusses the electromagnetic spectrum, describing the characteristics of each type of electromagnetic wave including radio waves, microwaves, infrared light, visible light, ultraviolet waves, X-rays, and gamma rays. It provides information on the frequency and wavelength ranges, what can be learned from each type of wave about Earth and the universe, and examples of NASA missions that utilize each section of the electromagnetic spectrum.
03 The Stars Mc Neely 2008
1. Stellar parallax is a method used to measure the distances to nearby stars by observing how their positions shift relative to more distant background stars over the course of 6 months as Earth orbits the Sun.
2. When starlight is passed through a prism or spectroscope, it is separated into a spectrum of colors that can reveal what chemical elements the star is made of. Different elements produce unique patterns of spectral lines.
3. By analyzing the absorption line spectra of stars, astronomers have identified over 70 chemical elements present in stars including hydrogen, helium, and metals like iron. A star's temperature can also be estimated from its spectral class.
Remote sensing
This document provides an overview of key concepts in remote sensing including:
- The electromagnetic spectrum and how different wavelengths are used in remote sensing.
- How electromagnetic radiation interacts with the atmosphere, including scattering, absorption, and transmission.
- How radiation interacts with the Earth's surface through reflection, absorption, and transmission.
- Spectral reflectance curves and how the reflectance of materials like vegetation, soil, and water vary across the electromagnetic spectrum.
- The basic principles and elements of remote sensing systems, from the energy source and sensors to data analysis and applications.
Electromagnetic Radiation
This document summarizes different types of electromagnetic radiation, including light, radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. It discusses their properties such as wavelength and frequency. Key topics covered include how light travels in waves, the electromagnetic spectrum, uses of different wavelengths such as communication and food heating, and properties of visible light like color.
28.1 Presentation (CP)
Astronomers use tools like telescopes, satellites, spacecraft, and the Hubble Space Telescope to observe and study the universe. Telescopes allow astronomers to see objects in different wavelengths of light and bring more light into focus than the human eye. Satellites are used to observe wavelengths blocked by the Earth's atmosphere and to obtain close-up observations of objects in space. Spacecraft like probes provide a way to study objects in our solar system up close and sometimes land on surfaces. Spinoffs from NASA technology have led to benefits for commercial industries and medicine.
Electromagnetic spectrum
The document discusses the electromagnetic spectrum. It describes the different types of electromagnetic radiation ordered from lowest to highest energy: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. It explains that all types of electromagnetic radiation are fundamentally the same thing despite being produced through different means and detected differently, and that the electromagnetic spectrum can be expressed through energy, wavelength, or frequency.
Electromagnetic spectrum
The document discusses the electromagnetic spectrum, which comprises seven types of electromagnetic radiation ranging from radio waves to gamma rays. It also discusses spectroscopy, the study of spectra to determine chemical composition and physical properties. There are three main types of spectra: continuous, dark-line, and bright-line. The document provides examples of how different regions of the electromagnetic spectrum are used, such as microwaves for radar and X-rays for medical imaging. It also summarizes two important factors about radiating bodies: Stefan-Boltzmann's law relating radiation to temperature, and how hotter objects radiate more energy at shorter wavelengths.
The Electromagnetic Spectrum
The document discusses the electromagnetic spectrum, which consists of all types of electromagnetic waves including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. It explains that electromagnetic waves have properties of speed, frequency, and wavelength, and that frequency and wavelength have an inverse relationship, with higher frequencies corresponding to shorter wavelengths and more energy. It provides information about the characteristics and uses of different parts of the electromagnetic spectrum.
Light
Light can be described as both a wave and a particle. As a wave, it travels at 300 million meters per second and is characterized by its wavelength and frequency. The different wavelengths of light make up the electromagnetic spectrum, from radio waves to gamma rays. As the frequency increases, so does the energy of the electromagnetic waves. Light also behaves as particles called photons, which are emitted or absorbed in specific wavelengths by electrons in atoms. This allows spectroscopy to be used to determine the composition of different objects by their emission or absorption spectra.
The electromagnetic spectrum
The document discusses the electromagnetic spectrum. It describes how electromagnetic waves can be classified based on their frequency and wavelength into different types of radiation including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Each type of electromagnetic radiation has distinct characteristics and common uses. For example, radio waves are used to transmit audio and television signals, microwaves are used in radar and microwave ovens, and X-rays are used in medical imaging. The document also discusses hypotheses about dark matter particles called axions and the possibility of detecting gamma ray bursts from supernovae that could provide evidence about the nature of dark matter.
Di luzio sara_clil
The document summarizes the electromagnetic spectrum, which consists of different types of electromagnetic radiation organized by wavelength. It describes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. For each type of radiation, it provides details on wavelength range and common uses. It also discusses how the Fermi Space Telescope is being used to study astrophysical phenomena through gamma-ray astronomy observations.
Emr and spectrophotmetry
This document discusses radiant energy and spectrophotometry. It begins by describing the electromagnetic spectrum and how electromagnetic radiation consists of synchronized oscillations of electric and magnetic fields that propagate at the speed of light. It then discusses sources of radiation like lamps that provide visible and ultraviolet light. Radiation is described as either ionizing, having enough energy to alter molecules, or non-ionizing, which causes heating effects. The interaction of radiation with matter is explained, noting that absorption of visible and UV light causes electron excitation. Dispersion, diffraction, refraction, absorption, transmission, and absorptivity are defined. Finally, Lambert's law relating absorbance and path length, Beer's law relating absorbance and concentration, and
Electromagnetic radiation
This document discusses electromagnetic radiation and its properties. It defines electromagnetic radiation as a form of energy that exhibits both wave and particle properties. As a wave, electromagnetic radiation is characterized by its frequency, wavelength, and amplitude. Higher frequency radiation like gamma rays and X-rays have shorter wavelengths and higher energies, allowing them to penetrate deeper into materials. Exposure to high energy radiation can be dangerous by breaking molecular bonds through ionization. Electromagnetic radiation can also be described by photon particles, where the energy of each photon is determined by Planck's constant and the radiation's frequency or wavelength.
Light
1. Light travels in straight lines at speeds of 186,000 miles per second from the sun to Earth, where some is absorbed by plants as energy and some warms the atmosphere.
2. Light is a form of electromagnetic radiation that can be described as waves of photons, with properties like wavelength and frequency.
3. Herschel's experiment in 1800 discovered infrared light by finding that a thermometer placed outside the visible spectrum registered the highest temperature.
Electromagnetic spectrum
The electromagnetic spectrum represents the range of electromagnetic radiation from low energy, long wavelength radio waves to high energy, short wavelength gamma rays. It includes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays. The document provides details on the wavelengths, frequencies and typical uses of different types of electromagnetic waves, including definitions of standard names for radio bands and common names for different frequency ranges used for communication technologies.
Electromagnetic Spectrum PowerPoint Presentation for Teachers/Students
Here are some additional examples of practical applications of different regions of the electromagnetic spectrum:
Radio waves:
- Wireless communication (WiFi, Bluetooth, mobile networks)
- Radio broadcasting
Microwaves:
- Satellite communication and television
- Cell phone networks
- Microwave ovens
Infrared:
- Infrared cameras and thermometers
- TV remote controls
- Infrared heating
Visible light:
- Lighting
- Photography
- Displays (LCD, LED screens)
Ultraviolet:
- UV lamps for curing, sterilization and counterfeit detection
- Fluorescence microscopy
- Dermatology treatments
X-rays:
-
Uv visible spectroscopy
Ultraviolet-visible (UV-Vis) spectrophotometry is a technique used to measure light absorbance across the ultraviolet and visible ranges of the electromagnetic spectrum. When incident light strikes matter it can either be absorbed, reflected, or transmitted.
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1. The document introduces concepts related to electromagnetic radiation and the electromagnetic spectrum. It discusses how electromagnetic waves are produced by oscillating electric and magnetic fields.
2. Key concepts in remote sensing are introduced such as the electromagnetic spectrum, radiant quantities, energy interactions of reflection, absorption and transmission, and thermal radiation properties.
3. Principles of thermal remote sensing are covered including Planck's law, Stefan-Boltzmann law, blackbody radiation, emissivity of graybodies and selective radiators, and Wien's displacement law.
Wave probigation
The document discusses the ionosphere and how it affects radio wave propagation. It describes the different layers of the ionosphere (D, E, F, etc.) and how they interact with electromagnetic waves at different frequencies, allowing radio communications over long distances using skywaves. It also discusses factors like polarization, fading, and optimum antenna configurations for different frequency ranges and propagation modes like amateur radio DX contacts using the ionosphere.
Visible light wave
Visible light waves are electromagnetic waves that humans can see, ranging from wavelengths of 390-750 nm. Each color of light has a different wavelength, with red having the longest at 620-750 nm and violet having the shortest at 380-450 nm. When white light passes through a prism, it is separated into the colors of the visible light spectrum due to differences in wavelength. Sir Isaac Newton was the first to observe this using sunlight and a prism.
Electromagnetic spectrum
The electromagnetic spectrum ranges from gamma rays to radio waves and includes wavelengths from less than a billionth of a meter to kilometers long. It forms a continuous series ordered by wavelength and frequency, with shorter wavelengths and higher frequencies carrying more energy. The visible light portion lies between infrared and ultraviolet wavelengths, and contains the colors that the human eye can perceive. Different parts of the spectrum are used for various applications including remote sensing, communications, manufacturing, and medical treatments.
Electromagnetic spectrum
The document discusses the electromagnetic spectrum and the properties of different types of electromagnetic waves. It covers:
1. Wave properties including amplitude, wavelength, frequency, crests, and troughs.
2. Types of electromagnetic waves including radio waves, visible light, microwaves, infrared, ultraviolet, X-rays, and gamma rays.
3. How each type of electromagnetic wave behaves and is used, such as using radio waves for communication and MRI, visible light being what we see, and X-rays being used for medical imaging.
Electromagnetic radiation
Electromagnetic radiation (EMR) is a form of energy that can transfer through empty space and consists of oscillating electric and magnetic fields perpendicular to each other and the direction of propagation. EMR travels at the speed of light and can be described using both wave and particle models. The wave model conceives EMR as waves characterized by amplitude, wavelength, frequency, and speed of light. Shorter wavelengths correspond to higher frequencies and more energy. EMR interacts with matter by reflecting, absorbing, or transmitting depending on the material. The particle model views EMR as discrete packets of energy called photons whose energy is determined by the photon's frequency and Planck's constant.
Periodic table
The periodic table organizes the elements and provides useful information to chemists. It was developed by Dmitri Mendeleev in the late 1800s by arranging elements in rows by atomic weight and columns by chemical properties. The modern periodic table arranges elements by atomic number and divides them into groups and periods that predict chemical and physical trends. The position of an element on the periodic table reveals its valence electrons and how it will bond and react.
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This document provides an overview of the key legal challenges that health insurance litigators may face in 2012 and beyond related to the Affordable Care Act. It summarizes the pending Supreme Court case challenging the constitutionality of the individual mandate provision. The document outlines the four questions that will be addressed by the Supreme Court related to whether the individual mandate is a tax, if it exceeds Congress' powers under the Commerce Clause, and whether it is severable from the rest of the Act if found unconstitutional. It provides background on the Commerce Clause and relevant case law informing each question.
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This document outlines an agenda and case studies for a presentation on complex claims investigations. The presentation covers contestable investigations, suicide investigations, accidental death policies, and critical illness riders. Case studies are provided for each topic, describing fact scenarios and policy provisions. The purpose is to identify relevant questions to ask given the specific facts and contract language. The goal is to have a fair and consistent process for rendering reasonable claims decisions. Attendees are encouraged to ask questions.
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28.1 Presentation (CP)
Astronomers use tools like telescopes, satellites, spacecraft, and the Hubble Space Telescope to observe and study the universe. Telescopes allow astronomers to see objects in different wavelengths of light and bring more light into focus than the human eye. Satellites are used to observe wavelengths blocked by the Earth's atmosphere and to obtain close-up observations of objects in space. Spacecraft like probes provide a way to study objects in our solar system up close and sometimes land on surfaces. Spinoffs from NASA technology have led to benefits for commercial industries and medicine.
Electromagnetic spectrum
The document discusses the electromagnetic spectrum. It describes the different types of electromagnetic radiation ordered from lowest to highest energy: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. It explains that all types of electromagnetic radiation are fundamentally the same thing despite being produced through different means and detected differently, and that the electromagnetic spectrum can be expressed through energy, wavelength, or frequency.
Electromagnetic spectrum
The document discusses the electromagnetic spectrum, which comprises seven types of electromagnetic radiation ranging from radio waves to gamma rays. It also discusses spectroscopy, the study of spectra to determine chemical composition and physical properties. There are three main types of spectra: continuous, dark-line, and bright-line. The document provides examples of how different regions of the electromagnetic spectrum are used, such as microwaves for radar and X-rays for medical imaging. It also summarizes two important factors about radiating bodies: Stefan-Boltzmann's law relating radiation to temperature, and how hotter objects radiate more energy at shorter wavelengths.
The Electromagnetic Spectrum
The document discusses the electromagnetic spectrum, which consists of all types of electromagnetic waves including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. It explains that electromagnetic waves have properties of speed, frequency, and wavelength, and that frequency and wavelength have an inverse relationship, with higher frequencies corresponding to shorter wavelengths and more energy. It provides information about the characteristics and uses of different parts of the electromagnetic spectrum.
Light
Light can be described as both a wave and a particle. As a wave, it travels at 300 million meters per second and is characterized by its wavelength and frequency. The different wavelengths of light make up the electromagnetic spectrum, from radio waves to gamma rays. As the frequency increases, so does the energy of the electromagnetic waves. Light also behaves as particles called photons, which are emitted or absorbed in specific wavelengths by electrons in atoms. This allows spectroscopy to be used to determine the composition of different objects by their emission or absorption spectra.
The electromagnetic spectrum
The document discusses the electromagnetic spectrum. It describes how electromagnetic waves can be classified based on their frequency and wavelength into different types of radiation including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Each type of electromagnetic radiation has distinct characteristics and common uses. For example, radio waves are used to transmit audio and television signals, microwaves are used in radar and microwave ovens, and X-rays are used in medical imaging. The document also discusses hypotheses about dark matter particles called axions and the possibility of detecting gamma ray bursts from supernovae that could provide evidence about the nature of dark matter.
Di luzio sara_clil
The document summarizes the electromagnetic spectrum, which consists of different types of electromagnetic radiation organized by wavelength. It describes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. For each type of radiation, it provides details on wavelength range and common uses. It also discusses how the Fermi Space Telescope is being used to study astrophysical phenomena through gamma-ray astronomy observations.
Emr and spectrophotmetry
This document discusses radiant energy and spectrophotometry. It begins by describing the electromagnetic spectrum and how electromagnetic radiation consists of synchronized oscillations of electric and magnetic fields that propagate at the speed of light. It then discusses sources of radiation like lamps that provide visible and ultraviolet light. Radiation is described as either ionizing, having enough energy to alter molecules, or non-ionizing, which causes heating effects. The interaction of radiation with matter is explained, noting that absorption of visible and UV light causes electron excitation. Dispersion, diffraction, refraction, absorption, transmission, and absorptivity are defined. Finally, Lambert's law relating absorbance and path length, Beer's law relating absorbance and concentration, and
Electromagnetic radiation
This document discusses electromagnetic radiation and its properties. It defines electromagnetic radiation as a form of energy that exhibits both wave and particle properties. As a wave, electromagnetic radiation is characterized by its frequency, wavelength, and amplitude. Higher frequency radiation like gamma rays and X-rays have shorter wavelengths and higher energies, allowing them to penetrate deeper into materials. Exposure to high energy radiation can be dangerous by breaking molecular bonds through ionization. Electromagnetic radiation can also be described by photon particles, where the energy of each photon is determined by Planck's constant and the radiation's frequency or wavelength.
Light
1. Light travels in straight lines at speeds of 186,000 miles per second from the sun to Earth, where some is absorbed by plants as energy and some warms the atmosphere.
2. Light is a form of electromagnetic radiation that can be described as waves of photons, with properties like wavelength and frequency.
3. Herschel's experiment in 1800 discovered infrared light by finding that a thermometer placed outside the visible spectrum registered the highest temperature.
Electromagnetic spectrum
The electromagnetic spectrum represents the range of electromagnetic radiation from low energy, long wavelength radio waves to high energy, short wavelength gamma rays. It includes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays. The document provides details on the wavelengths, frequencies and typical uses of different types of electromagnetic waves, including definitions of standard names for radio bands and common names for different frequency ranges used for communication technologies.
Electromagnetic Spectrum PowerPoint Presentation for Teachers/Students
Here are some additional examples of practical applications of different regions of the electromagnetic spectrum:
Radio waves:
- Wireless communication (WiFi, Bluetooth, mobile networks)
- Radio broadcasting
Microwaves:
- Satellite communication and television
- Cell phone networks
- Microwave ovens
Infrared:
- Infrared cameras and thermometers
- TV remote controls
- Infrared heating
Visible light:
- Lighting
- Photography
- Displays (LCD, LED screens)
Ultraviolet:
- UV lamps for curing, sterilization and counterfeit detection
- Fluorescence microscopy
- Dermatology treatments
X-rays:
-
Uv visible spectroscopy
Ultraviolet-visible (UV-Vis) spectrophotometry is a technique used to measure light absorbance across the ultraviolet and visible ranges of the electromagnetic spectrum. When incident light strikes matter it can either be absorbed, reflected, or transmitted.
Physics of remote sensing
1. The document introduces concepts related to electromagnetic radiation and the electromagnetic spectrum. It discusses how electromagnetic waves are produced by oscillating electric and magnetic fields.
2. Key concepts in remote sensing are introduced such as the electromagnetic spectrum, radiant quantities, energy interactions of reflection, absorption and transmission, and thermal radiation properties.
3. Principles of thermal remote sensing are covered including Planck's law, Stefan-Boltzmann law, blackbody radiation, emissivity of graybodies and selective radiators, and Wien's displacement law.
Wave probigation
The document discusses the ionosphere and how it affects radio wave propagation. It describes the different layers of the ionosphere (D, E, F, etc.) and how they interact with electromagnetic waves at different frequencies, allowing radio communications over long distances using skywaves. It also discusses factors like polarization, fading, and optimum antenna configurations for different frequency ranges and propagation modes like amateur radio DX contacts using the ionosphere.
Visible light wave
Visible light waves are electromagnetic waves that humans can see, ranging from wavelengths of 390-750 nm. Each color of light has a different wavelength, with red having the longest at 620-750 nm and violet having the shortest at 380-450 nm. When white light passes through a prism, it is separated into the colors of the visible light spectrum due to differences in wavelength. Sir Isaac Newton was the first to observe this using sunlight and a prism.
Electromagnetic spectrum
The electromagnetic spectrum ranges from gamma rays to radio waves and includes wavelengths from less than a billionth of a meter to kilometers long. It forms a continuous series ordered by wavelength and frequency, with shorter wavelengths and higher frequencies carrying more energy. The visible light portion lies between infrared and ultraviolet wavelengths, and contains the colors that the human eye can perceive. Different parts of the spectrum are used for various applications including remote sensing, communications, manufacturing, and medical treatments.
Electromagnetic spectrum
The document discusses the electromagnetic spectrum and the properties of different types of electromagnetic waves. It covers:
1. Wave properties including amplitude, wavelength, frequency, crests, and troughs.
2. Types of electromagnetic waves including radio waves, visible light, microwaves, infrared, ultraviolet, X-rays, and gamma rays.
3. How each type of electromagnetic wave behaves and is used, such as using radio waves for communication and MRI, visible light being what we see, and X-rays being used for medical imaging.
Electromagnetic radiation
Electromagnetic radiation (EMR) is a form of energy that can transfer through empty space and consists of oscillating electric and magnetic fields perpendicular to each other and the direction of propagation. EMR travels at the speed of light and can be described using both wave and particle models. The wave model conceives EMR as waves characterized by amplitude, wavelength, frequency, and speed of light. Shorter wavelengths correspond to higher frequencies and more energy. EMR interacts with matter by reflecting, absorbing, or transmitting depending on the material. The particle model views EMR as discrete packets of energy called photons whose energy is determined by the photon's frequency and Planck's constant.
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2) The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. This is expressed by F=ma.
3) For every action, there is an equal and opposite reaction. The forces of action and reaction between two objects always act in opposite directions.
Genetics introduction
The document introduces key concepts in genetics including chromosomes, DNA, genes, traits, genotypes, phenotypes, alleles, heterozygous, homozygous, and Punnett squares. It explains that chromosomes contain DNA and are found in pairs, with one from each parent. Genes are segments of DNA that determine traits. Genotypes are the genetic makeup and phenotypes are the physical traits. Dominant and recessive alleles and heterozygous and homozygous conditions are also defined. Punnett squares are introduced as a tool to predict the probability of traits in offspring based on the parents' alleles.
Adaptation and selective breeding
Animals develop physical features over many generations through natural selection that help them obtain food, stay safe from predators, build homes, withstand weather, and attract mates. These features are not acquired during an animal's lifetime but are inherited from parents and include traits like beak shape, number of fingers, fur color and thickness, and nose or ear shape. Many organisms avoid predators through camouflage, hiding, fleeing, or warning signals. The peppered moth example illustrates how a dark color mutation provided camouflage for moths in polluted areas, making the dark form more common than the light form.
Electromagnetic spectrum
The document discusses the electromagnetic spectrum, which includes different types of electromagnetic waves that transfer energy, including visible light, infrared, ultraviolet, microwaves, radio waves, X-rays, and gamma rays. These waves have different wavelengths and frequencies and travel through space at the speed of light. Visible light is the only part of the electromagnetic spectrum that humans can see, but all types are forms of radiation. The document provides examples of how different types of electromagnetic waves are used, such as radio waves for communication, microwaves for cooking, and X-rays for medical imaging.
Lab equipment
The document lists and describes various pieces of lab equipment commonly used in chemistry labs, including beakers, Erlenmeyer flasks, graduated cylinders, test tubes, funnels, crucibles, ring stands, clamps, and other tools used for heating, mixing, transferring, and measuring chemicals and reactions. Safety precautions are noted for several items to avoid exposure to hot substances or breakage. Proper use and storage is emphasized to prevent contamination and damage to equipment.
Viruses
This document summarizes key information about viruses and bacteria from a biology chapter 17 presentation. It defines viruses as non-cellular particles composed of genetic material and protein that can invade living cells. It lists many common viral diseases such as the cold, flu, smallpox, measles, and AIDS. The document also explains that viruses are transmitted through coughing, sneezing, touching contaminated surfaces, and sharing of body fluids.
Speed and Time graphs
This document provides information about distance vs time graphs and speed vs time graphs. It discusses key concepts such as:
- No movement results in a flat line graph for distance vs time and speed vs time
- Constant speed results in a straight line graph for both with the slope equal to the speed
- Acceleration results in a curved line graph for speed vs time with the slope of the line indicating the acceleration
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Weather - Winds, air masses, air pressures, fronts
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Similar to Extension on wavelenghts and the spectrum
Dtu10e lecture ppt_ch03
This document discusses the properties and uses of telescopes. It begins by explaining that telescopes collect and focus light to observe astronomical objects using electromagnetic radiation across the spectrum. It then discusses key topics like the nature of light as waves, the development of reflecting telescopes, and factors that influence a telescope's capabilities such as light gathering power and resolution. The document provides examples to illustrate these concepts and the limitations of different telescope designs.
The radio telescope invention is accredited to Kari Guthe Jansk
The radio telescope invention is accredited to Kari Guthe Jansky. A radio telescope is basically a specialized antenna and radio receiver used to detect radio waves from astronomical radio sources (i.e., moon, stars, planets, etc.) The field of study is called Radio Astronomy and studies the radio frequency portion of the electromagnetic spectrum (E.M.). Traditional telescopes study these same astronomical objects by analyzing the light wave portion of the electromagnetic spectrum.
Since radio waves are at the lower frequency and relative weaker range of the EM spectrum, they are collected and amplified by the radio telescope antenna and receiver. These waves can then be analyzed. The general wavelength range of these waves are from 1 millimeter to 10 meters long. Therefore, we usually refer to radio waves in terms of their frequencies instead of their corresponding wavelengths. This is also why radio telescopes are the world largest telescopes with the most sensitive receivers.
Early radio telescopes had a serious limitation in that they had to be tuned to one specific frequency. With vast improvements in modern electronic technology, radio receivers and computers can divide the frequency band into several thousand separate channels that may range from over tens to hundreds of megahertz. This modern improvement in radio telescope technology provided a great advantage when compared to optical telescopes. Another advantage is that radio telescopes can be used both day and night.
Radio telescopes like the Long Wavelength Array, seen here, do not need accurate dish surfaces to detect radio waves from space. These use dipole antennas in a cross-shape.
Reference
National Radio Astronomy Observatory.
What are Radio Telescopes?
(2022).
What are Radio Telescopes? – National Radio Astronomy Observatory (nrao.edu)
Links to an external site.
...
G10 Science Q2- W1-2- Electromagnetic Waves-1.ppt
Electromagnetic waves have different wavelengths and frequencies. They range from radio waves with the longest wavelengths and lowest frequencies to gamma rays with the shortest wavelengths and highest frequencies. All electromagnetic waves travel at the same speed of 300,000,000 meters/second in a vacuum. The higher the frequency, the higher the energy of the electromagnetic wave. Examples are given of how different electromagnetic waves are used such as radio waves for communication, microwaves for cooking, infrared for night vision, visible light for sight, ultraviolet for sterilization, x-rays for medical imaging, and gamma rays for radiation therapy.
Electromagnetic spectrum_lecture 1.pptx
The document provides an introduction to the electromagnetic spectrum and spectroscopy. It discusses how electromagnetic radiation exhibits wave-like properties with a wavelength and frequency. The wavelength is the distance between peaks and troughs, while frequency is the number of waves passing a point per second. Wavelength and frequency are inversely proportional and related by the velocity of light. Higher frequency radiation has higher energy. Spectroscopy studies how electromagnetic radiation interacts with atoms and molecules. Different regions of the spectrum probe different molecular structures.
Chapter 16 electronics and information and communication technology (ict)
Electromagnetic waves transfer energy through space in the form of oscillating electric and magnetic fields. They include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays. All electromagnetic waves travel at the speed of light in a vacuum and differ only in their wavelength and frequency. Radio waves have the longest wavelengths and are used for communications technologies like radio, television and cellular networks. Electronic components like resistors are used in devices that transmit and receive radio waves.
Electromagnetic spectrum.ppt
Electromagnetic waves travel as vibrations in electric and magnetic fields and include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. They are arranged in order of increasing frequency and decreasing wavelength in the electromagnetic spectrum. Electromagnetic waves have various properties including speed, frequency, wavelength, and energy level, with higher frequency waves having higher energy. Different types of electromagnetic waves are used for various applications such as communication technologies, cooking, medical imaging, sterilization, and radiation therapy.
CLIL - The electromagnetic spectrum
The document summarizes the electromagnetic spectrum, which consists of different types of electromagnetic radiation ordered by wavelength. It discusses radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. For each type of radiation, it provides details on wavelength ranges, how they are produced and used, and examples of applications. It concludes by discussing how the Fermi Space Telescope is used to study astrophysical phenomena like active galactic nuclei through gamma-ray astronomy observations.
CLIL - The electromagnetic spectrum
The document summarizes the electromagnetic spectrum, which consists of different types of electromagnetic radiation ordered by wavelength. It describes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. For each type of radiation, it provides details on wavelength ranges, how they are produced and used, and examples of applications. It also briefly describes the Fermi Space Telescope and its use in gamma-ray astronomy observations to study astrophysical phenomena such as active galactic nuclei and dark matter.
Electromagnetic spectrum
The document discusses the electromagnetic spectrum and the properties of different types of electromagnetic waves. It covers:
1. Wave properties including amplitude, wavelength, frequency, crests, and troughs.
2. Types of electromagnetic waves including radio waves, visible light, microwaves, infrared, ultraviolet, X-rays, and gamma rays.
3. How each type of electromagnetic wave behaves and is used, such as using radio waves for communication and MRI, visible light being what we see, and X-rays being used for medical imaging.
Electromagnetic Spectrum
The electromagnetic spectrum consists of electromagnetic waves that differ in frequency and wavelength. It ranges from gamma rays with the highest frequency and shortest wavelength to radio waves with the lowest frequency and longest wavelength. All electromagnetic waves travel at the speed of light and are classified based on their position within the electromagnetic spectrum according to their frequency or wavelength.
Chapter 2 RS.pptx
The document discusses electromagnetic radiation (EMR) and its interactions in remote sensing. It explains that EMR interacts with the atmosphere, Earth's surface, and remote sensor detector. The key interactions are absorption, scattering, and reflection. Absorption removes energy from EMR, while scattering changes its direction. Reflection returns energy to the sensor. Together these interactions impact which parts of the electromagnetic spectrum can be used for remote sensing.
Principles of Remote Sensing
1) The document discusses remote sensing and provides definitions and explanations of key concepts such as the electromagnetic spectrum, atmospheric interaction with electromagnetic waves, and atmospheric windows.
2) It describes the seven elements of remote sensing including the energy source, interaction with the atmosphere and target, sensor recording, processing, interpretation, and application.
3) The electromagnetic spectrum is divided into regions including radio waves, microwaves, infrared, visible light, ultraviolet, and others. Certain regions have high atmospheric transmittance and are considered atmospheric windows for remote sensing.
Nature of Light
This document provides an overview of the nature of light. It begins by describing light as an electromagnetic wave that consists of vibrating electric and magnetic fields and does not require matter to travel through. It then discusses key characteristics of light, including its speed, the importance of light from the sun as an energy source, and the electromagnetic spectrum. The document proceeds to describe different types of electromagnetic waves, including radio waves, microwaves, infrared waves, visible light, ultraviolet light, x-rays, and gamma rays. It provides examples of uses for each type of wave and notes both beneficial and harmful effects of exposure.
electromagnetic spectrum-power-point
A. Electromagnetic waves travel as vibrations in electric and magnetic fields at the speed of light in a vacuum. They have properties of both waves and particles.
B. The electromagnetic spectrum orders electromagnetic waves from radio to gamma rays based on increasing frequency and decreasing wavelength. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
C. Each type of electromagnetic wave has different applications including global positioning systems, microwave ovens, night vision goggles, visible light, sunbathing, medical imaging, and nuclear power.
Emw
1. The document defines electromagnetic waves as waves of electric and magnetic fields that propagate perpendicularly to each other and to the direction of propagation at speeds of 300 million meters per second.
2. Electromagnetic waves have different propagation mechanisms depending on their frequency, including ground waves, space waves, and skywaves which propagate through the ionosphere.
3. Key properties of electromagnetic waves include their transverse wave nature, reflection, refraction, diffraction, polarization, and ability to behave as both waves and particles such as photons.
Electro Magnetic Wave Propagation
Electromagnetic waves have different wavelengths and frequencies depending on their position in the electromagnetic spectrum. They all travel at the same speed of 300 million meters per second in a vacuum. Waves with longer wavelengths have lower frequencies while those with shorter wavelengths have higher frequencies. The higher the frequency, the higher the energy carried by the electromagnetic wave.
Radio communication
This document provides an introduction to electromagnetic waves and antennas. It defines a wave as an oscillation that transfers energy through space and time. Electromagnetic waves are created by combining electric and magnetic fields and do not require a medium to travel. Key properties of electromagnetic waves include frequency, wavelength, and velocity. The document then discusses different areas of the electromagnetic spectrum from radio waves to gamma rays. It provides examples of applications for different types of electromagnetic radiation. The document concludes by defining antennas as devices used for radiating or receiving electromagnetic waves and discussing different types of transmission lines like coaxial cables, microstrips, and striplines.
Chapter 06
This document provides an outline and overview of key concepts in astronomy related to light and telescopes. It discusses:
1. The electromagnetic spectrum and different types of electromagnetic radiation used in astronomy like visible light, infrared, ultraviolet, X-rays, and radio waves.
2. Optical telescopes and their components like lenses, mirrors, and eyepieces. It also covers concepts like light gathering power, resolving power, and magnification.
3. Modern telescope designs that are lighter, computer-controlled, and use techniques like adaptive optics to improve image quality.
4. Other types of telescopes like radio telescopes and how interferometry is used to improve their resolving power by combining signals from
Michael SeedsDana BackmanChapter 4Light and Telesc.docx
This document discusses light and telescopes. It explains that telescopes gather and focus light to study distant astronomical objects. Larger telescopes have more light-gathering power and resolving power, allowing them to see fainter and finer details. There are two main types of telescopes - reflecting telescopes which use mirrors and refracting telescopes which use lenses. Radio telescopes also observe radiation beyond the visible spectrum. The document outlines the electromagnetic spectrum and different types of radiation. It describes properties of light as both a wave and particle, and how telescopes form images to magnify views of celestial objects.
Light
Light travels at 300,000 km/s. It has properties of both waves and particles. Spectral lines identify elements in stars - each element produces a unique set of lines. Astronomers use spectral lines and Wien's and Stefan-Boltzmann laws to determine surface temperatures of stars and planets from their emitted light.
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More from Brandi
Seasons
The seasons are caused by the 23.5 degree tilt of the Earth's axis as it revolves around the sun, resulting in different parts of the Earth receiving more or less direct sunlight over the course of a year. Summer occurs in the northern hemisphere when its axis is tilted toward the sun, producing longer days, and winter happens when the axis is tilted away from the sun for shorter days. The changing position of the Earth relative to the sun's rays is responsible for seasonal variations in weather patterns and daylight hours around the world.
Volcanoes
Volcanoes erupt when pressure from gases and magma built up in the volcano's magma chamber is too great. This is similar to the pressure build up in a balloon until it bursts. When the pressure is released, gases and molten rock (magma) are ejected from the volcano in explosive eruptions or flow out as lava in nonexplosive eruptions. Volcanoes form at boundaries where tectonic plates meet, especially at subduction zones, as well as at hot spots in the mantle.
Earth interior
This document provides an overview of the layers of the Earth through a series of diagrams and explanations. It discusses the four main layers - the lithosphere, asthenosphere, outer core, and inner core. The lithosphere includes the crust and upper mantle and is broken into tectonic plates. The asthenosphere is below the lithosphere and flows like hot asphalt due to convection currents, allowing the plates to move. Deeper layers get progressively hotter and the immense pressure would crush anything at the Earth's core.
Plate tectonics
Here are the steps to demonstrate a transform boundary using the snack tectonics materials:
1. Place a small amount of icing along the edge of one piece of wax paper to represent the plate boundary.
2. Hold the two pieces of wax paper next to each other with the icing in between.
3. Slowly slide the pieces of wax paper past each other along the icing, which represents the plates moving horizontally in opposite directions.
This demonstrates how transform boundaries form as the plates slide past each other laterally without either plate subducting under the other. The icing represents the fault line where energy is released through earthquakes as the plates shear and grind against each other.
Classroom pictures from 1st and 2nd nine weeks
The document contains pictures from classrooms during the first and second nine weeks of the school year. Students can be seen working individually and collaboratively on various academic activities and projects. The pictures provide a snapshot into classroom learning and engagement during the early part of the school year.
Unicellular and mulitcellular
This document discusses unicellular and multicellular organisms. Unicellular organisms are made of only one cell and include bacteria, amoebas, and unicellular fungi and yeasts. They are microscopic and need to be seen with a microscope. Multicellular organisms are made of two or more cells and include humans, cats, dogs, insects, trees and more. They can be seen with the naked eye and need all parts to survive. Examples are given of both unicellular and multicellular organisms.
What is a chromosome anyway
Chromosomes are structures that carry genetic information in the form of DNA. They are found in the nucleus of human cells and determine characteristics like eye color and blood type. Each human cell normally contains 23 pairs of chromosomes, for a total of 46.
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This document outlines classroom rules, procedures, and expectations for Ms. Herrington's 8th grade science class. It details policies on entering the classroom, voice levels, assigned seating, supplies needed, classroom jobs, tardiness, signals to get the teacher's attention, restroom passes, testing procedures, and lining up to leave the classroom. Consequences for not following rules include warnings, detention, and referrals. Students are expected to be respectful, prepared, responsible, and follow all procedures to maintain a positive learning environment.
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This document discusses the use of cell phones in the classroom. It notes that most students have cell phones but many teachers are concerned about distraction and cheating. However, only 13% of teachers think cell phones cannot have a positive impact on learning. The document then lists ways that students and parents think cell phones could be used educationally, such as looking up information, taking notes, and playing educational games. Finally, it provides examples of cell phone apps and activities that could be used in the classroom, such as polling, photo projects, games, and accessing educational resources.
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How does your privacy program stack up against your peers? What challenges are privacy teams tackling and prioritizing in 2024?
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
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Extension on wavelenghts and the spectrum
- 1. The Electromagnetic Radiation (Light – the Supreme Informant!)
- 2. The Electromagnetic Spectrum More than meets the eye!
- 4. Wavelength The distance from one wave crest to the next Radio waves have longest wavelength and Gamma rays have shortest!
- 5. Wavelength Units Meters (like on last slide and in book, p. 613) More commonly in nanometers (1 nm = 10-9meters) Angstroms still used Named for Swedish Astronomer who first named these wavelengths 1 nanometer = 10 Ao
- 6. How light or electromagnetic radiation is used in Astronomy Astronomers use a tool called a spectroscope to separate starlight into its colors – in this way, they can tell what a star is made of, its temperature, luminosity and so on… Astronomers can look at astronomical objects at different wavelengths…
- 7. Spectra of a Star