Optics 1
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The document discusses concepts related to light, shadows, and reflection. It defines key terms like luminous intensity, luminous flux, and illumination. It explains how shadows are formed from a point light source and how the shadows would look from two point sources or a circular source. It also covers image formation using plane mirrors, the difference between real and virtual images, and how to draw images formed in mirrors.
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Light.ppt
Light is an electromagnetic wave that consists of oscillating electric and magnetic fields and can travel through space. It spreads in straight lines and carries energy. Light sources such as the sun emit light, while objects that do not emit light themselves are called dark bodies. When light hits surfaces, it can be reflected, absorbed, or pass through depending on whether the surface is opaque, translucent, or transparent. The law of reflection states that the angle of incidence equals the angle of reflection. Shadows form when light rays are blocked by an opaque object.
Shadows
Shadows are formed in 5 parts: 1) The highlighted area where light directly hits the object, 2) The light to medium transition where values gradually change from light to dark, 3) The core shadow which is the darkest part receiving the least light, 4) Reflected light from the surface the object rests on, and 5) The cast shadow on the surface from the object.
Chap16 Light
The document discusses fundamentals of light, including:
1) Light comes from sources like the sun, light bulbs, and other luminous sources that emit light directly, while non-luminous sources like the moon reflect light and appear illuminated.
2) The amount of light emitted from a source is called luminous flux, while the amount of light falling on a surface is called illuminance, which follows an inverse-square relationship with distance from the light source.
3) Models like the ray model of light describe light traveling in straight lines from sources, and can be used to calculate illuminance on surfaces from point light sources.
Properties of light
Light travels in straight lines and very fast, faster than sound. We see objects because they reflect light into our eyes, while shadows are formed when light is blocked. There are two main types of reflection - specular reflection off smooth surfaces like mirrors, and diffuse reflection off rough surfaces. The law of reflection states that the incident ray, reflected ray, and normal to the surface all lie in the same plane, with the angle of incidence equaling the angle of reflection.
Luminous intensity
The document defines luminous intensity as the amount of light emitted by a light source per unit solid angle in a particular direction. The SI unit of luminous intensity is the candela, which is approximately equal to the amount of light emitted by a common wax candle. Luminous intensity is measured using a photometer, which directly provides the intensity in candela.
Color & light
Light is radiant energy that allows for vision. It travels very fast at around 300,000 km/s and comes from the sun as the main natural light source. There are two types of light - natural from sources like the sun, and artificial that is man-made such as light bulbs. Objects can be transparent and let all light pass through, translucent and let some light pass through, or opaque and not let any light pass through. Light interacts with objects and the environment in various ways such as reflecting, transmitting, scattering, and causing shadows, rainbows, and colors.
Reflection and Refraction
Light is part of the electromagnetic spectrum that is visible to the human eye. It travels in straight lines called rays. Reflection is when light bounces off a surface, following the laws that the angle of incidence equals the angle of reflection and that the incident, normal, and reflected rays lie in the same plane. Refraction is when light changes speed and direction as it passes from one medium to another due to the different refractive indices, following Snell's law. Total internal reflection occurs when light cannot pass from an optically denser medium to a less dense one if the angle of incidence exceeds the critical angle.
Light its nature and behaviour By Malik Shahroz
Light is an electromagnetic wave that travels in waves and particles. It allows objects to be visible by stimulating sight. Light can be reflected, absorbed, or transmitted when it strikes a new medium. It can be refracted, polarized, or scattered during transmission. Materials affect light in different ways and can be transparent, translucent, or opaque. The quantum theory describes light most accurately as traveling in packets of energy called photons.
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Light.ppt
Light is an electromagnetic wave that consists of oscillating electric and magnetic fields and can travel through space. It spreads in straight lines and carries energy. Light sources such as the sun emit light, while objects that do not emit light themselves are called dark bodies. When light hits surfaces, it can be reflected, absorbed, or pass through depending on whether the surface is opaque, translucent, or transparent. The law of reflection states that the angle of incidence equals the angle of reflection. Shadows form when light rays are blocked by an opaque object.
Shadows
Shadows are formed in 5 parts: 1) The highlighted area where light directly hits the object, 2) The light to medium transition where values gradually change from light to dark, 3) The core shadow which is the darkest part receiving the least light, 4) Reflected light from the surface the object rests on, and 5) The cast shadow on the surface from the object.
Chap16 Light
The document discusses fundamentals of light, including:
1) Light comes from sources like the sun, light bulbs, and other luminous sources that emit light directly, while non-luminous sources like the moon reflect light and appear illuminated.
2) The amount of light emitted from a source is called luminous flux, while the amount of light falling on a surface is called illuminance, which follows an inverse-square relationship with distance from the light source.
3) Models like the ray model of light describe light traveling in straight lines from sources, and can be used to calculate illuminance on surfaces from point light sources.
Properties of light
Light travels in straight lines and very fast, faster than sound. We see objects because they reflect light into our eyes, while shadows are formed when light is blocked. There are two main types of reflection - specular reflection off smooth surfaces like mirrors, and diffuse reflection off rough surfaces. The law of reflection states that the incident ray, reflected ray, and normal to the surface all lie in the same plane, with the angle of incidence equaling the angle of reflection.
Luminous intensity
The document defines luminous intensity as the amount of light emitted by a light source per unit solid angle in a particular direction. The SI unit of luminous intensity is the candela, which is approximately equal to the amount of light emitted by a common wax candle. Luminous intensity is measured using a photometer, which directly provides the intensity in candela.
Color & light
Light is radiant energy that allows for vision. It travels very fast at around 300,000 km/s and comes from the sun as the main natural light source. There are two types of light - natural from sources like the sun, and artificial that is man-made such as light bulbs. Objects can be transparent and let all light pass through, translucent and let some light pass through, or opaque and not let any light pass through. Light interacts with objects and the environment in various ways such as reflecting, transmitting, scattering, and causing shadows, rainbows, and colors.
Reflection and Refraction
Light is part of the electromagnetic spectrum that is visible to the human eye. It travels in straight lines called rays. Reflection is when light bounces off a surface, following the laws that the angle of incidence equals the angle of reflection and that the incident, normal, and reflected rays lie in the same plane. Refraction is when light changes speed and direction as it passes from one medium to another due to the different refractive indices, following Snell's law. Total internal reflection occurs when light cannot pass from an optically denser medium to a less dense one if the angle of incidence exceeds the critical angle.
Light its nature and behaviour By Malik Shahroz
Light is an electromagnetic wave that travels in waves and particles. It allows objects to be visible by stimulating sight. Light can be reflected, absorbed, or transmitted when it strikes a new medium. It can be refracted, polarized, or scattered during transmission. Materials affect light in different ways and can be transparent, translucent, or opaque. The quantum theory describes light most accurately as traveling in packets of energy called photons.
Light Properties
Light travels in straight lines at a speed of around 300,000 kilometres per second, much faster than sound. We see objects because they reflect light into our eyes. Shadows are formed when light is blocked by an object. Light reflects off surfaces at the same angle it hits them, following the law of reflection. White light is made up of the colors of the rainbow which can be split and recombined.
Properties of light
Light is a form of energy that can be emitted or reflected and travels in straight paths. There are several sources of light including incandescence from heat, phosphorescence through slow energy release, and fluorescence or chemiluminescence from chemical reactions. Objects can be transparent and allow full light transmission, translucent to partially transmit light, or opaque to block all light. The visible light spectrum ranges from red to violet wavelengths, and color is determined by which wavelengths of light are reflected or absorbed. Light acts as a wave that transfers energy through amplitude and wavelength.
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3) Reflection and refraction of light follow specific laws, such as the law of reflection where the angle of incidence equals the angle of reflection, and Snell's law relating the indices of refraction and angles of light passing through different mediums.
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Light is electromagnetic radiation that can behave as both a particle (photon) and a wave. It travels at 300 million meters per second in a vacuum. When light interacts with matter, it can be transmitted, reflected, scattered, absorbed, or refracted. The color of light depends on its wavelength, with shorter wavelengths like blue having higher frequencies and energies than longer wavelengths like red.
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1) Interference and polarization of light are examined through experiments like Young's slits and using polarizers. Interference creates light and dark fringes depending on the path difference between waves.
2) Huygens' principle is introduced as explaining how secondary wavelets propagate light in a manner consistent with laws of reflection and refraction. Each point on a wavefront acts as a secondary source.
3) Polarization occurs when unpolarized light passes through a filter, causing vibrations of the electric field to lie in one plane rather than randomly oriented planes. Crossed polarizers can eliminate transmitted light.
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- Total internal reflection, which occurs when light traveling from an optically dense medium to a less dense one is completely reflected back if the angle of incidence is greater than the critical angle.
- Image formation by plane mirrors, which produce virtual images that are laterally inverted, the same size as the object, and an equal distance behind the mirror as the object is in front of it.
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The document discusses various properties of visible light, including that it is part of the electromagnetic spectrum detectable by the human eye, with wavelengths between 380-740 nanometers. It describes how light interacts with different materials by being transmitted, reflected, or absorbed, and can be refracted or reflected, with refraction causing changes in speed and direction as light passes into new mediums. The concepts of albedo, reflection, refraction, index of refraction, and angles of incidence and refraction are also introduced.
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Lighting terminology and units can be complex, but essentially come down to three main concepts:
1) Luminous flux refers to the total amount of visible light emitted by a source, measured in lumens. 2) Illuminance refers to the amount of light falling on a surface, measured in lux. 3) Luminance refers to the amount of light emitted from or reflected off a surface, measured in candelas per square meter. Understanding these core photometric concepts and the related units like lumens, lux, and candelas is essential for working with lighting.
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Light travels in straight lines at a speed of around 300,000 kilometres per second, much faster than sound. We see objects because they reflect light into our eyes. Shadows are formed when light is blocked by an object. Light reflects off surfaces at the same angle it hits them, following the law of reflection. White light is made up of the colors of the rainbow which can be split and recombined.
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Light is a form of energy that can be emitted or reflected and travels in straight paths. There are several sources of light including incandescence from heat, phosphorescence through slow energy release, and fluorescence or chemiluminescence from chemical reactions. Objects can be transparent and allow full light transmission, translucent to partially transmit light, or opaque to block all light. The visible light spectrum ranges from red to violet wavelengths, and color is determined by which wavelengths of light are reflected or absorbed. Light acts as a wave that transfers energy through amplitude and wavelength.
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1) The document discusses key concepts of light including its properties, reflection, refraction, total internal reflection, and optical fibers.
2) It describes how light travels very fast in straight lines, and how we see objects because light reflects into our eyes from them. Shadows are formed when light is blocked.
3) Reflection and refraction of light follow specific laws, such as the law of reflection where the angle of incidence equals the angle of reflection, and Snell's law relating the indices of refraction and angles of light passing through different mediums.
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A laser produces a narrow, coherent beam of light through stimulated emission of photons within gaseous or solid active media. Lasers emit light of a single wavelength that is coherent, directional, and potentially dangerous if exposed to eyes or flesh. Protective eyewear is necessary when working with or around lasers to prevent permanent eye damage from the concentrated laser light.
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Light is electromagnetic radiation that can behave as both a particle (photon) and a wave. It travels at 300 million meters per second in a vacuum. When light interacts with matter, it can be transmitted, reflected, scattered, absorbed, or refracted. The color of light depends on its wavelength, with shorter wavelengths like blue having higher frequencies and energies than longer wavelengths like red.
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Light exhibits properties of both waves and particles. The electromagnetic spectrum ranges from radio waves to gamma rays and includes visible light. Light sources can be incandescent, producing light from heat, or luminescent, producing "cold light" through other means. Objects are either luminous sources of light or illuminated objects that reflect light. Illuminated objects can be opaque, blocking light, translucent, scattering light, or transparent, readily transmitting light.
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2) Huygens' principle is introduced as explaining how secondary wavelets propagate light in a manner consistent with laws of reflection and refraction. Each point on a wavefront acts as a secondary source.
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This document discusses key concepts in optics including:
- Reflection and refraction of light based on the laws of reflection and refraction. The law of reflection states that the angle of incidence equals the angle of reflection, while refraction depends on the index of refraction between two materials.
- Total internal reflection, which occurs when light traveling from an optically dense medium to a less dense one is completely reflected back if the angle of incidence is greater than the critical angle.
- Image formation by plane mirrors, which produce virtual images that are laterally inverted, the same size as the object, and an equal distance behind the mirror as the object is in front of it.
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Light is a form of energy that allows us to see objects and can be natural or artificial. It travels in straight lines away from its source at 300,000 km/s. Light interacts with materials by passing through, reflecting off, or being blocked. Lenses have properties like refraction and reflection that allow them to converge or diverge light rays, which makes them useful for applications like glasses, projectors, telescopes, and microscopes. Sound is another form of energy produced by vibrations that can be described by its intensity, pitch, and timbre. It travels more slowly than light at 340 m/s in air and can produce echoes or reverberation when reflecting off obstacles.
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This document discusses the history and development of night vision technology from its origins in WWII to modern applications. It describes how early night vision devices used searchlights but had disadvantages, leading to advancements like image intensification tubes and thermal imaging. The document outlines the generations of night vision and how they provide improved amplification and resolution. It discusses uses of night vision in the military, law enforcement, automobiles and other areas, concluding that night vision has come a long way from its military origins to help people today.
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This document discusses types of night vision technology, including image intensifiers and thermal imaging. It describes how image intensifiers work by amplifying ambient light using a cathode, microchannel plate, and phosphor screen to produce a visible image. Thermal imaging detects infrared radiation emitted by objects and displays it in various colors based on temperature. Common night vision devices include scopes, goggles, and cameras, which are used for applications like wildlife observation, security, and military purposes. The advantages of night vision technology are the ability to see in low-light conditions and its small size, light weight, and low power requirements.
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The document discusses various properties of visible light, including that it is part of the electromagnetic spectrum detectable by the human eye, with wavelengths between 380-740 nanometers. It describes how light interacts with different materials by being transmitted, reflected, or absorbed, and can be refracted or reflected, with refraction causing changes in speed and direction as light passes into new mediums. The concepts of albedo, reflection, refraction, index of refraction, and angles of incidence and refraction are also introduced.
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The document discusses various properties of light waves including diffraction, interference, polarization, and holograms. It explains Huygens' principle which describes how each point on a wavefront acts as a secondary source. The properties of light waves are explored through experiments and illustrations, showing how waves propagate and interact through various phenomena such as constructive and destructive interference.
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This document describes the phenomenon of light interference and the conditions required. It explains that when two light waves meet, their amplitudes can either constructively or destructively interfere. Constructive interference occurs when crests and troughs align, making the combined amplitude and brightness higher. Destructive interference happens when crests and troughs are out of phase, canceling each other out and creating dim spots. The document also discusses Thomas Young's double slit experiment that demonstrated these principles of light interference and how interference patterns are produced.
Sight and wave option a review
The document describes various phenomena related to sight and waves. It discusses the anatomy of the eye including the cornea, pupil, lens, retina, optic nerve, fovea, rods and cones. It then covers topics such as vision in low light, color detection, color blindness, the lens and its focusing abilities, diffraction, resolution, polarization, Brewster's law, the Doppler effect, and gives examples of calculations related to these concepts.
X ray diffraction ppt
The document discusses various methods of x-ray analysis. It begins by describing how x-rays are produced using a Coolidge tube, which generates x-rays by accelerating electrons into a metal target. It then discusses several x-ray techniques including x-ray diffraction, which is based on constructive interference of x-rays scattered by crystal lattices and is governed by Bragg's law. Finally, it summarizes common methods for x-ray diffraction analysis including transmission methods, back-reflection methods, and Bragg's x-ray spectrometer method which measures diffraction intensities using a rotating crystal.
Lecture 2
This document discusses the physics of color and light measurement. It covers topics like:
1) Color is a sensory perception produced in the brain that requires a light source, object, and observer.
2) The wavelength of light determines its perceived color - visible light has wavelengths between 380-760nm.
3) Light intensity is measured in lumens and is affected by factors like distance from the light source due to the inverse square law.
4) Common light sources like incandescent, fluorescent, and blackbody radiation are described in terms of their spectral properties and color temperatures.
uv visible spectrometery ppt
This document provides an overview of UV-Visible spectroscopy. It discusses the basic principles, components, and types of UV-Visible spectrophotometers. The key components include a light source, monochromator, cuvettes to hold samples, and detectors. It also describes the principles of absorption spectroscopy and how double-beam spectrophotometers work by splitting the light source into reference and sample beams to improve accuracy. UV-Visible spectroscopy is a common technique for quantitative analysis that measures how light is absorbed by molecules at different wavelengths.
Photometry
This document discusses key concepts in photometry and illumination. It defines luminous flux, luminous intensity, illuminance, and luminance. It explains that luminous flux is a measure of total light power, luminous intensity measures the directionality of light, illuminance is the amount of light falling on a surface, and luminance measures the brightness of a surface. It also discusses the inverse square law and cosine law governing illuminance and how filters can selectively transmit wavelengths of light.
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Reflection of Light || Class 10th Notes|| By Vineet Sharma || Part 1 ||
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Troubleshooting, Designing, & Installing Digital & Analog Closed Circuit TV S...
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Moving fluidpressure 10
Bernoulli's principle states that as the speed of a moving fluid increases, the pressure within the fluid decreases. It explains how drinking straws work by describing that the air above the liquid in the straw moves faster than the air below, creating lower pressure and suction. An airplane wing is curved at the top to make the air above it move faster according to Bernoulli's principle, and the lower pressure helps lift the plane.
Magnetism 2
This document discusses electromagnets and magnetic fields. It asks the reader to identify the poles of a magnet as it moves through an electromagnet when the switch is off. It also asks the reader to find the magnetic field strength at several points and discusses how magnets move when a switch is off. Finally, it mentions the magnetic field of the Earth.
Magnetism
This document discusses various topics related to magnetism including:
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Liquid pressure 10
The document discusses various concepts related to liquid pressure including:
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The document discusses atmospheric pressure and the measurement of gas pressures. It explains that Torricelli first demonstrated atmospheric pressure using mercury in a barometer in 1643. The document also outlines Boyle's law that at a constant temperature, the pressure and volume of a gas are inversely proportional. Finally, it discusses manometers as devices used to measure gas pressures.
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The document discusses key concepts in electric circuits including resistance, equivalent resistance, current, and voltage. It defines resistance as the hindrance to the flow of charge and provides examples of calculating equivalent resistance in series and parallel circuits. Current is defined as the rate of flow of charge and its unit is given as the ampere. Voltage is also mentioned but not defined. Methods for finding equivalent resistances in different parts of circuit diagrams are presented.
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The document discusses key concepts in electric circuits including resistance, equivalent resistance, current, and voltage. It defines resistance as the hindrance to the flow of charge and provides methods for calculating equivalent resistance in series and parallel circuits. Current is defined as the rate of flow of charge and its unit is given as the ampere. Voltage is also mentioned but not defined. Examples are given of calculating equivalent resistance in various circuit configurations.
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Authoring a personal GPT for your research and practice: How we created the Q...
Thematic analysis in qualitative research is a time-consuming and systematic task, typically done using teams. Team members must ground their activities on common understandings of the major concepts underlying the thematic analysis, and define criteria for its development. However, conceptual misunderstandings, equivocations, and lack of adherence to criteria are challenges to the quality and speed of this process. Given the distributed and uncertain nature of this process, we wondered if the tasks in thematic analysis could be supported by readily available artificial intelligence chatbots. Our early efforts point to potential benefits: not just saving time in the coding process but better adherence to criteria and grounding, by increasing triangulation between humans and artificial intelligence. This tutorial will provide a description and demonstration of the process we followed, as two academic researchers, to develop a custom ChatGPT to assist with qualitative coding in the thematic data analysis process of immersive learning accounts in a survey of the academic literature: QUAL-E Immersive Learning Thematic Analysis Helper. In the hands-on time, participants will try out QUAL-E and develop their ideas for their own qualitative coding ChatGPT. Participants that have the paid ChatGPT Plus subscription can create a draft of their assistants. The organizers will provide course materials and slide deck that participants will be able to utilize to continue development of their custom GPT. The paid subscription to ChatGPT Plus is not required to participate in this workshop, just for trying out personal GPTs during it.
The binding of cosmological structures by massless topological defects
Assuming spherical symmetry and weak field, it is shown that if one solves the Poisson equation or the Einstein field
equations sourced by a topological defect, i.e. a singularity of a very specific form, the result is a localized gravitational
field capable of driving flat rotation (i.e. Keplerian circular orbits at a constant speed for all radii) of test masses on a thin
spherical shell without any underlying mass. Moreover, a large-scale structure which exploits this solution by assembling
concentrically a number of such topological defects can establish a flat stellar or galactic rotation curve, and can also deflect
light in the same manner as an equipotential (isothermal) sphere. Thus, the need for dark matter or modified gravity theory is
mitigated, at least in part.
Equivariant neural networks and representation theory
Or: Beyond linear.
Abstract: Equivariant neural networks are neural networks that incorporate symmetries. The nonlinear activation functions in these networks result in interesting nonlinear equivariant maps between simple representations, and motivate the key player of this talk: piecewise linear representation theory.
Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
学校原件一模一样【微信：741003700 】《(salfor毕业证书)索尔福德大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
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四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
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◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
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6:个人职称评审加20分
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ESR spectroscopy in liquid food and beverages.pptx
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Direct Seeded Rice - Climate Smart Agriculture
Direct Seeded Rice - Climate Smart AgricultureInternational Food Policy Research Institute- South Asia Office
PPT on Direct Seeded Rice 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.
8.Isolation of pure cultures and preservation of cultures.pdf
Isolation of pure culture, its various method.
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.
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Sharlene Leurig - Enabling Onsite Water Use with Net Zero WaterTexas Alliance of Groundwater Districts
Presented at June 6-7 Texas Alliance of Groundwater Districts Business MeetingDescribing and Interpreting an Immersive Learning Case with the Immersion Cub...
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
The technology uses reclaimed CO₂ as the dyeing medium in a closed loop process. When pressurized, CO₂ becomes supercritical (SC-CO₂). In this state CO₂ has a very high solvent power, allowing the dye to dissolve easily.
The cost of acquiring information by natural selection
This is a short talk that I gave at the Banff International Research Station workshop on Modeling and Theory in Population Biology. The idea is to try to understand how the burden of natural selection relates to the amount of information that selection puts into the genome.
It's based on the first part of this research paper:
The cost of information acquisition by natural selection
Ryan Seamus McGee, Olivia Kosterlitz, Artem Kaznatcheev, Benjamin Kerr, Carl T. Bergstrom
bioRxiv 2022.07.02.498577; doi: https://doi.org/10.1101/2022.07.02.498577
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.
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Authoring a personal GPT for your research and practice: How we created the Q...
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The binding of cosmological structures by massless topological defects
The binding of cosmological structures by massless topological defects
Equivariant neural networks and representation theory
Equivariant neural networks and representation theory
ESR spectroscopy in liquid food and beverages.pptx
ESR spectroscopy in liquid food and beverages.pptx
Basics of crystallography, crystal systems, classes and different forms
Basics of crystallography, crystal systems, classes and different forms
8.Isolation of pure cultures and preservation of cultures.pdf
8.Isolation of pure cultures and preservation of cultures.pdf
Applied Science: Thermodynamics, Laws & Methodology.pdf
Applied Science: Thermodynamics, Laws & Methodology.pdf
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
aziz sancar nobel prize winner: from mardin to nobel
aziz sancar nobel prize winner: from mardin to nobel
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
The cost of acquiring information by natural selection
The cost of acquiring information by natural selection
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...
Optics 1
- 3. 2 1 . Y Y E ğ i t i m i luminous Intensity The rate at which light spreads over a surface of a given area some distance from a source. Its unit is candela(cd) The intensity varies with the distance from the source and the power of the source.
- 4. 2 1 . Y Y E ğ i t i m i luminous flux • Luminous flux is the quantity of the energy of the light emitted per second in all directions.
- 5. 2 1 . Y Y E ğ i t i m i İllumination • The luminous flux per unit area at any point on a surface exposed to incident light.
- 11. 2 1 . Y Y E ğ i t i m i Shadow formation • A shadow is formed where light is 'missing'. A dark shadow (umbra) is formed where no light falls and a light shadow (penumbra) is formed where some light falls, but some is blocked.
- 13. 2 1 . Y Y E ğ i t i m i Two Point Light Source
- 14. 2 1 . Y Y E ğ i t i m i Two Point Light Source
- 21. 2 1 . Y Y E ğ i t i m i How observers will see the light source?
- 22. 2 1 . Y Y E ğ i t i m i Reflection and Plane Mirrors
- 23. 2 1 . Y Y E ğ i t i m i Image Formation with Plane mirrors
- 24. 2 1 . Y Y E ğ i t i m i Types of images (a) Real Image This is one through which the light rays actually pass and which can be formed on a screen. Examples of real images are the image formed on the film in a camera or on the retina of your eye (b) Virtual Image This is one through which the rays do not pass, they only appear to come from it. Examples of virtual images are the image formed by a magnifying glass when used to look at a small object and that in a plane mirror.
- 26. 2 1 . Y Y E ğ i t i m i How the rays leave the system?
- 27. 2 1 . Y Y E ğ i t i m i Which points does the observer see from the mirror?
- 29. 2 1 . Y Y E ğ i t i m i Draw the images of the objects
- 34. 2 1 . Y Y E ğ i t i m i Which ray can pass through K?
- 36. 2 1 . Y Y E ğ i t i m i Which points does the observer see from the mirror?