Light- General Properties
•Download as PPTX, PDF•
0 likes•1,316 views
This document discusses the general properties of light. It defines light as electromagnetic radiation that is visible to the human eye, with wavelengths between 400-700 nanometers, that travels at 299,792 km/s in a vacuum. The key properties of light discussed are its speed, wavelength, frequency, color, and spectrum. Light carries important astronomical information about the location, temperature, composition and distance of stars, planets and other celestial objects.
Report
Share
Report
Share
Recommended
Wave particle duality of light- A changing Notion in Science
Here a changing notion of science has been displayed. How the concept of wave theory of light changed to particle theory and finally the duality.
Application of ML in physical layer
This document discusses the application of machine learning techniques in physical layer communication. It outlines the fundamentals and limitations of classical approaches to physical layer communication. It then introduces multi-layer perceptrons and recurrent neural networks as machine learning methodologies that can be applied. Specific use cases of machine learning for MIMO detection and modulation classification are discussed. The conclusion is that while classical approaches face limitations, machine learning shows promise in helping to solve physical layer communication problems, especially as more training data becomes available.
Optical Fiber
The document discusses optical fibers, including their evolution, structure, working principles, classification, and applications. Optical fibers first emerged in the late 19th century and were refined over the 20th century. An optical fiber consists of a core and cladding layer that uses total internal reflection to guide light along its path. Fibers are classified based on the number of propagation modes as either single-mode or multi-mode, and also by refractive index profile as step-index or graded-index. Optical fibers have numerous applications in telecommunications, computing, medicine, and other fields due to their advantages over electrical cables.
Dark Energy
The document discusses dark energy, which accounts for about 70% of the mass of the universe but cannot be directly observed. Measurements of type 1a supernovae found that the expansion of the universe is accelerating, rather than slowing down as expected, suggesting the existence of a mysterious force exerting gravitational repulsion. This dark energy corresponds to Einstein's cosmological constant, which he later disregarded as his "biggest blunder" but may have been correct after all. Current theories hold that dark energy is responsible for the accelerating expansion of the universe.
The big bang theory
The document summarizes the Big Bang theory, which proposes that approximately 13.8 billion years ago the observable universe was extremely hot and dense and has been expanding and cooling ever since. It provides evidence for this theory, including the cosmic microwave background radiation, Hubble's discovery of the expansion of the universe, and the abundance of light elements produced in the early universe. It also notes some problems with the theory, such as uneven distribution of matter, and possibilities for the ultimate fate of the universe.
Nature of light
This presentation summarizes key concepts about the nature of light. It introduces Newton's rings experiment, which demonstrates light interference between a spherical and flat surface. An equation is shown relating the ring number, radius of curvature, and wavelength. The wave theory of light proposes that light acts as waves that can interfere and have additive effects, with different colors represented by different wavelengths. Figures demonstrate Newton's rings and Young's double slit experiment, which supported the wave theory of light.
Satellite communications
The document discusses satellite communications, including the basic components and orbits of communication satellites, how they are used to transmit signals, and some of their applications such as television, radio, and mobile phones. Key orbits discussed include LEO, MEO, and GEO orbits, and the advantages and disadvantages of each for communication purposes. The document also covers frequency allocation and some of the challenges of using satellites for communication.
Laser ii 2 ppt
The document discusses nanosecond lasers, which produce optical pulses with durations measured in nanoseconds. It describes how nanosecond pulses are generated using techniques like Q-switching and gain switching that produce high intensity pulses. Nanosecond lasers have applications in fields like materials processing, distance measurement, remote sensing, and more due to their ability to deliver high pulse energies over short timescales.
Recommended
Wave particle duality of light- A changing Notion in Science
Here a changing notion of science has been displayed. How the concept of wave theory of light changed to particle theory and finally the duality.
Application of ML in physical layer
This document discusses the application of machine learning techniques in physical layer communication. It outlines the fundamentals and limitations of classical approaches to physical layer communication. It then introduces multi-layer perceptrons and recurrent neural networks as machine learning methodologies that can be applied. Specific use cases of machine learning for MIMO detection and modulation classification are discussed. The conclusion is that while classical approaches face limitations, machine learning shows promise in helping to solve physical layer communication problems, especially as more training data becomes available.
Optical Fiber
The document discusses optical fibers, including their evolution, structure, working principles, classification, and applications. Optical fibers first emerged in the late 19th century and were refined over the 20th century. An optical fiber consists of a core and cladding layer that uses total internal reflection to guide light along its path. Fibers are classified based on the number of propagation modes as either single-mode or multi-mode, and also by refractive index profile as step-index or graded-index. Optical fibers have numerous applications in telecommunications, computing, medicine, and other fields due to their advantages over electrical cables.
Dark Energy
The document discusses dark energy, which accounts for about 70% of the mass of the universe but cannot be directly observed. Measurements of type 1a supernovae found that the expansion of the universe is accelerating, rather than slowing down as expected, suggesting the existence of a mysterious force exerting gravitational repulsion. This dark energy corresponds to Einstein's cosmological constant, which he later disregarded as his "biggest blunder" but may have been correct after all. Current theories hold that dark energy is responsible for the accelerating expansion of the universe.
The big bang theory
The document summarizes the Big Bang theory, which proposes that approximately 13.8 billion years ago the observable universe was extremely hot and dense and has been expanding and cooling ever since. It provides evidence for this theory, including the cosmic microwave background radiation, Hubble's discovery of the expansion of the universe, and the abundance of light elements produced in the early universe. It also notes some problems with the theory, such as uneven distribution of matter, and possibilities for the ultimate fate of the universe.
Nature of light
This presentation summarizes key concepts about the nature of light. It introduces Newton's rings experiment, which demonstrates light interference between a spherical and flat surface. An equation is shown relating the ring number, radius of curvature, and wavelength. The wave theory of light proposes that light acts as waves that can interfere and have additive effects, with different colors represented by different wavelengths. Figures demonstrate Newton's rings and Young's double slit experiment, which supported the wave theory of light.
Satellite communications
The document discusses satellite communications, including the basic components and orbits of communication satellites, how they are used to transmit signals, and some of their applications such as television, radio, and mobile phones. Key orbits discussed include LEO, MEO, and GEO orbits, and the advantages and disadvantages of each for communication purposes. The document also covers frequency allocation and some of the challenges of using satellites for communication.
Laser ii 2 ppt
The document discusses nanosecond lasers, which produce optical pulses with durations measured in nanoseconds. It describes how nanosecond pulses are generated using techniques like Q-switching and gain switching that produce high intensity pulses. Nanosecond lasers have applications in fields like materials processing, distance measurement, remote sensing, and more due to their ability to deliver high pulse energies over short timescales.
Einstein's theory of relativity - Explained!
Einstein’s Theories of Relativity revolutionized how Today’s Scientific world thinks about Space, Time, Mass, Energy and Gravity. This is purely an imaginative Science that worked in the Laboratory of Einstein's Brain..
Introduction to Pulsar(Astrophysics)
This document discusses pulsars and provides information about them. It begins by listing the group members and topics to be discussed, including an introduction to pulsars, their properties, discovery, formation from neutron stars, examples of the Crab pulsar and binary pulsars, and their radiating mechanism. It then provides details on the properties of pulsars, their extremely high density, classification, and the discovery of the first pulsar PSR B1919+21. The document summarizes how pulsars are formed from the collapse and rotation of massive stars, and discusses the Crab pulsar and binary pulsars in more detail. It concludes by outlining some applications and milestones of pulsar research, including their use in gravitational wave
Optical fiber communication
This document discusses optical fiber communication, including its evolution, structure, working principle, classification, advantages and applications. Optical fiber communication transmits light pulses through fiber to exchange information over long distances. Historically it was first proposed in 1880 and lasers were introduced as light sources in 1960. Optical fibers are classified as single mode or multi-mode depending on the number of modes light can propagate through. They work on the principle of total internal reflection. Optical fiber communication is used for telecommunication networks, cable TV, and military applications due to its high bandwidth, security and flexibility.
Optical communication
The following ppt gives overview about Optical Communication and the underlying principle with the general overview of all the contents for optical communication
Photonic crystal fibers
This document discusses photonic crystal fibers (PCFs). PCFs are composed of nanostructures that affect photon propagation through periodic refractive indices, similar to how semiconductor crystals affect electron motion. PCFs can guide light through two mechanisms: index guiding and photonic bandgap guiding. They have properties like endless single mode operation, large mode areas, and tunable dispersion. Special PCFs include double core fibers, highly birefringent fibers, and hollow core bandgap fibers. PCFs offer advantages over standard fibers like flexibility in core size and wavelengths used. Challenges include difficult fabrication and limited operating frequencies.
Fundamental forces of nature.
All Four Fundamental Forces of nature. Beautiful and interactive multimedia slides. Don't forget to like or comment.
Optical fiber (Fiber Optics)
A brief presentation about optical fiber technology. Presented by Abdessalam BENHARIRA and Laurent PANEK.
Summary
1. What is optical fiber ?
2. How it works ?
3. Different types
4. Uses
5. Advantages and disadvantages
6. Conclusion
RELATIVITY THEORY
The document discusses Albert Einstein's theories of special and general relativity. Special relativity introduced concepts like the constancy of the speed of light and reference frames. General relativity holds that gravity is not a force but a consequence of objects warping the geometry of spacetime. It predicts phenomena like light deflection near massive objects and gravitational time dilation, which were later confirmed. The document also provides background on the Michelson-Morley experiment and quotes from Einstein and Hawking about the implications of relativity theory.
Introduction to light
1. In the 17th century, Isaac Newton and Christian Huygens proposed different theories on the nature of light - Newton believed light consisted of particles while Huygens believed it was a wave.
2. Through experiments like the double slit experiment, it was shown that light exhibits both wave-like and particle-like properties.
3. Modern understanding is that light has a dual nature, it can behave as a particle called a photon as well as a wave. This is called the wave-particle duality of light.
Fiber optics
Fiber optic cables transmit data using thin strands of glass or plastic called optical fibers. Light travels down the core of the fiber due to total internal reflection from the surrounding cladding layer. There are two main types of fiber optic cables: single-mode fibers have a very thin core that allows only one light path, while multi-mode fibers have a thicker core that allows multiple light paths. Fiber optic technology enables high-speed, long-distance data transmission with advantages like low signal loss and weight.
Optical communication system
A survey to Optical communication system as a system , sub-system , applications , commissioning and related technical and governing issues.
Physics - Optical Illusions & Mirages
Mirages are optical illusions caused by light refracting when passing through air layers of different temperatures. There are two types: inferior mirages appear below the actual position of an object, and superior mirages appear above. Optical illusions occur when our brain misinterprets visual images, due to factors like brightness, color, background, and past experiences. There are several categories of optical illusions including impossible, after-image, 3D, ambiguous, distortion, facial, and color/shadow illusions.
Time dilation & length contraction
1. The document discusses Albert Einstein's special theory of relativity, which proposes that the concepts of space and time need to be revised based on two postulates: the principle of relativity and the principle of the independence of the velocity of light.
2. It describes key effects of special relativity including time dilation, length contraction, and the twin paradox. Time dilation refers to clocks slowing down relative to observers in motion, while length contraction is the decrease in measured length of an object based on the observer's motion.
3. The twin paradox hypothetically examines the scenario of twin sisters aging at different rates if one takes a space voyage, demonstrating time dilation. The document provides formulas and explanations for these effects of special relativity.
Fiber optics
Optical fibers transmit light along their length through the process of total internal reflection. They have three main components - a core that guides light, a cladding layer surrounding the core with a lower refractive index to contain light, and an outer protective coating. Light entering one end of the fiber undergoes successive reflections down the length of the fiber. Optical fibers have advantages like small size, flexibility, low loss transmission, and high bandwidth capacity that make them useful for long-distance communications, medical procedures, and sensors.
Gravitational Waves
Powerpoint presentation given during my Astrophysics Seminar course at RPI, discussing gravitational waves
Optical fiber communication Part 2 Sources and Detectors
For optical fiber communication, major light sources are hetero-junction-structured semiconductor laser diode and light emitting diodes. Heterojunction consists of two adjoining semiconductor materials with different bandgap energies. They have adequate power for wide range of applications. Detectors used are PiN diode and Avalanche Photodiode. Being very small in size and feeding to small core optical fiber, it is very important to study emission characteristics of sources and their coupling to fiber. As it can operate for low power over a long distance, received power is very small, hence study of noise characteristics of detectors is very essential...
5 interference and diffraction
When two waves meet, they can undergo interference through constructive or destructive interference. Constructive interference occurs when waves are in phase and combine to form a wave with greater amplitude, while destructive interference occurs when waves are out of phase and cancel each other out. This principle of interference can be demonstrated with sound waves, ripples in water, microwaves, and light. Diffraction is the spreading out of waves when passing through an opening, and is greatest when the width of the opening is similar to the wavelength. For interference patterns to be observed, the overlapping waves must be coherent, meaning they have the same wavelength, frequency, and a constant phase difference.
Free Electron Laser
A free electron laser works by accelerating a beam of electrons to relativistic speeds and passing them through an undulator, which is a series of magnets that cause the electrons to oscillate. This oscillation produces intense beams of radiation whose wavelength can be tuned by adjusting the electron energy or undulator strength. Free electron lasers produce highly tunable and coherent radiation that is useful for applications like chemistry, biology, and medicine due to their ability to "see" atoms. A prominent example is the Linac Coherent Light Source, which produces intense x-rays and is the world's most powerful laser.
Propagation of light
Light travels in straight lines and can only be seen when it reflects off objects into our eyes. Light comes from sources like the sun, lamps, or candles. When light travels through or reflects off objects, shadows are formed behind the objects where light is blocked. Light is made of different colors that are visible when separated using prisms or rainbows. Plants need light to grow properly and different colored lights can affect plant growth.
Satellite payload
A small presentation about Satellite Payload to help the viewer get a brief introduction about payload on satellite and can help them further dwell into topic of 'Satellite Communication' .
10 properties of light
The document discusses several key properties of light, including:
- Reflection - Light bounces off surfaces at the same angle it hits.
- Refraction - Light bends as it passes from one medium to another, changing speed. The degree of bending depends on the medium's index of refraction.
- Interference - When two light waves meet, they can constructively or destructively interfere based on how their crests and troughs align.
It explores light's dual nature as both a wave and particle, demonstrated through experiments like Young's double-slit experiment showing light's wave-like interference patterns, and the photoelectric effect showing its particulate properties.
properties of light
The document discusses several key properties of light:
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.
More Related Content
What's hot
Einstein's theory of relativity - Explained!
Einstein’s Theories of Relativity revolutionized how Today’s Scientific world thinks about Space, Time, Mass, Energy and Gravity. This is purely an imaginative Science that worked in the Laboratory of Einstein's Brain..
Introduction to Pulsar(Astrophysics)
This document discusses pulsars and provides information about them. It begins by listing the group members and topics to be discussed, including an introduction to pulsars, their properties, discovery, formation from neutron stars, examples of the Crab pulsar and binary pulsars, and their radiating mechanism. It then provides details on the properties of pulsars, their extremely high density, classification, and the discovery of the first pulsar PSR B1919+21. The document summarizes how pulsars are formed from the collapse and rotation of massive stars, and discusses the Crab pulsar and binary pulsars in more detail. It concludes by outlining some applications and milestones of pulsar research, including their use in gravitational wave
Optical fiber communication
This document discusses optical fiber communication, including its evolution, structure, working principle, classification, advantages and applications. Optical fiber communication transmits light pulses through fiber to exchange information over long distances. Historically it was first proposed in 1880 and lasers were introduced as light sources in 1960. Optical fibers are classified as single mode or multi-mode depending on the number of modes light can propagate through. They work on the principle of total internal reflection. Optical fiber communication is used for telecommunication networks, cable TV, and military applications due to its high bandwidth, security and flexibility.
Optical communication
The following ppt gives overview about Optical Communication and the underlying principle with the general overview of all the contents for optical communication
Photonic crystal fibers
This document discusses photonic crystal fibers (PCFs). PCFs are composed of nanostructures that affect photon propagation through periodic refractive indices, similar to how semiconductor crystals affect electron motion. PCFs can guide light through two mechanisms: index guiding and photonic bandgap guiding. They have properties like endless single mode operation, large mode areas, and tunable dispersion. Special PCFs include double core fibers, highly birefringent fibers, and hollow core bandgap fibers. PCFs offer advantages over standard fibers like flexibility in core size and wavelengths used. Challenges include difficult fabrication and limited operating frequencies.
Fundamental forces of nature.
All Four Fundamental Forces of nature. Beautiful and interactive multimedia slides. Don't forget to like or comment.
Optical fiber (Fiber Optics)
A brief presentation about optical fiber technology. Presented by Abdessalam BENHARIRA and Laurent PANEK.
Summary
1. What is optical fiber ?
2. How it works ?
3. Different types
4. Uses
5. Advantages and disadvantages
6. Conclusion
RELATIVITY THEORY
The document discusses Albert Einstein's theories of special and general relativity. Special relativity introduced concepts like the constancy of the speed of light and reference frames. General relativity holds that gravity is not a force but a consequence of objects warping the geometry of spacetime. It predicts phenomena like light deflection near massive objects and gravitational time dilation, which were later confirmed. The document also provides background on the Michelson-Morley experiment and quotes from Einstein and Hawking about the implications of relativity theory.
Introduction to light
1. In the 17th century, Isaac Newton and Christian Huygens proposed different theories on the nature of light - Newton believed light consisted of particles while Huygens believed it was a wave.
2. Through experiments like the double slit experiment, it was shown that light exhibits both wave-like and particle-like properties.
3. Modern understanding is that light has a dual nature, it can behave as a particle called a photon as well as a wave. This is called the wave-particle duality of light.
Fiber optics
Fiber optic cables transmit data using thin strands of glass or plastic called optical fibers. Light travels down the core of the fiber due to total internal reflection from the surrounding cladding layer. There are two main types of fiber optic cables: single-mode fibers have a very thin core that allows only one light path, while multi-mode fibers have a thicker core that allows multiple light paths. Fiber optic technology enables high-speed, long-distance data transmission with advantages like low signal loss and weight.
Optical communication system
A survey to Optical communication system as a system , sub-system , applications , commissioning and related technical and governing issues.
Physics - Optical Illusions & Mirages
Mirages are optical illusions caused by light refracting when passing through air layers of different temperatures. There are two types: inferior mirages appear below the actual position of an object, and superior mirages appear above. Optical illusions occur when our brain misinterprets visual images, due to factors like brightness, color, background, and past experiences. There are several categories of optical illusions including impossible, after-image, 3D, ambiguous, distortion, facial, and color/shadow illusions.
Time dilation & length contraction
1. The document discusses Albert Einstein's special theory of relativity, which proposes that the concepts of space and time need to be revised based on two postulates: the principle of relativity and the principle of the independence of the velocity of light.
2. It describes key effects of special relativity including time dilation, length contraction, and the twin paradox. Time dilation refers to clocks slowing down relative to observers in motion, while length contraction is the decrease in measured length of an object based on the observer's motion.
3. The twin paradox hypothetically examines the scenario of twin sisters aging at different rates if one takes a space voyage, demonstrating time dilation. The document provides formulas and explanations for these effects of special relativity.
Fiber optics
Optical fibers transmit light along their length through the process of total internal reflection. They have three main components - a core that guides light, a cladding layer surrounding the core with a lower refractive index to contain light, and an outer protective coating. Light entering one end of the fiber undergoes successive reflections down the length of the fiber. Optical fibers have advantages like small size, flexibility, low loss transmission, and high bandwidth capacity that make them useful for long-distance communications, medical procedures, and sensors.
Gravitational Waves
Powerpoint presentation given during my Astrophysics Seminar course at RPI, discussing gravitational waves
Optical fiber communication Part 2 Sources and Detectors
For optical fiber communication, major light sources are hetero-junction-structured semiconductor laser diode and light emitting diodes. Heterojunction consists of two adjoining semiconductor materials with different bandgap energies. They have adequate power for wide range of applications. Detectors used are PiN diode and Avalanche Photodiode. Being very small in size and feeding to small core optical fiber, it is very important to study emission characteristics of sources and their coupling to fiber. As it can operate for low power over a long distance, received power is very small, hence study of noise characteristics of detectors is very essential...
5 interference and diffraction
When two waves meet, they can undergo interference through constructive or destructive interference. Constructive interference occurs when waves are in phase and combine to form a wave with greater amplitude, while destructive interference occurs when waves are out of phase and cancel each other out. This principle of interference can be demonstrated with sound waves, ripples in water, microwaves, and light. Diffraction is the spreading out of waves when passing through an opening, and is greatest when the width of the opening is similar to the wavelength. For interference patterns to be observed, the overlapping waves must be coherent, meaning they have the same wavelength, frequency, and a constant phase difference.
Free Electron Laser
A free electron laser works by accelerating a beam of electrons to relativistic speeds and passing them through an undulator, which is a series of magnets that cause the electrons to oscillate. This oscillation produces intense beams of radiation whose wavelength can be tuned by adjusting the electron energy or undulator strength. Free electron lasers produce highly tunable and coherent radiation that is useful for applications like chemistry, biology, and medicine due to their ability to "see" atoms. A prominent example is the Linac Coherent Light Source, which produces intense x-rays and is the world's most powerful laser.
Propagation of light
Light travels in straight lines and can only be seen when it reflects off objects into our eyes. Light comes from sources like the sun, lamps, or candles. When light travels through or reflects off objects, shadows are formed behind the objects where light is blocked. Light is made of different colors that are visible when separated using prisms or rainbows. Plants need light to grow properly and different colored lights can affect plant growth.
Satellite payload
A small presentation about Satellite Payload to help the viewer get a brief introduction about payload on satellite and can help them further dwell into topic of 'Satellite Communication' .
What's hot (20)
Optical fiber communication Part 2 Sources and Detectors
Optical fiber communication Part 2 Sources and Detectors
Viewers also liked
10 properties of light
The document discusses several key properties of light, including:
- Reflection - Light bounces off surfaces at the same angle it hits.
- Refraction - Light bends as it passes from one medium to another, changing speed. The degree of bending depends on the medium's index of refraction.
- Interference - When two light waves meet, they can constructively or destructively interfere based on how their crests and troughs align.
It explores light's dual nature as both a wave and particle, demonstrated through experiments like Young's double-slit experiment showing light's wave-like interference patterns, and the photoelectric effect showing its particulate properties.
properties of light
The document discusses several key properties of light:
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.
Light Properties
Light is a form of electromagnetic radiation that can be described as a stream of massless particles called photons traveling in wave-like patterns. Electromagnetic radiation includes visible light as well as other wavelengths and includes properties like wavelength, frequency, and speed. Light travels in straight lines and can be reflected, refracted, and separated into colors using a prism. The sky appears blue during the day due to scattering of blue light by dust in the atmosphere.
Properties of light
This document discusses key properties of light including reflection, refraction, diffraction, and interference. Reflection occurs when light bounces off a surface, following the law that the angle of incidence equals the angle of reflection. Refraction is the bending of light when passing from one medium to another at different speeds. Diffraction causes light to bend around barriers depending on the wavelength and barrier size. Interference results from the interaction of crests and troughs of light waves, producing constructive or destructive interference.
Light.ppt
Light travels in straight lines until interacting with objects. It can scatter, reflect, refract, or be absorbed. Reflection causes light to bounce off a surface at the same angle. Refraction causes light to change speed and direction when passing from one medium to another, such as from water to air. Absorption occurs when light is taken in by an object and its energy is transferred to heat.
Light Importance Presentation
Lighting is important in film to set moods - bright colors suggest cheerfulness while dark colors imply sinister tones. The director works with camera and lighting crews to ensure imagery flows coherently. Background lighting illuminates the entire background area, often using three or four-point setups. Cameo lighting uses spotlights to focus on a single subject or person against a dark background. High key lighting reduces lighting ratios to create an upbeat mood and allow filming at any time. Popular techniques include using a soft front light with a stronger backlight to define edges, and mixing color temperatures from different lights in a scene.
Light
Light travels extremely fast at around 300,000 km/s. It travels in straight lines and we see objects because they reflect light into our eyes. There are two types of reflections - clear reflections from smooth surfaces and diffuse reflections from rough surfaces which scatter light in different directions. White light is made up of all the colors of the rainbow, and objects appear a certain color because they reflect only certain wavelengths of light while absorbing others.
Properties of light/ dental implant courses
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
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.
Ch 3 -properties of light
This document discusses various properties of light, including its behavior as both particles (photons) and waves. It describes experiments by Newton showing visible light can be separated into different colors/wavelengths. It also discusses how different wavelengths of electromagnetic radiation can penetrate the atmosphere, allowing astronomers to study celestial objects across the electromagnetic spectrum. Finally, it summarizes laws like the Stefan-Boltzmann and Wien's laws that describe how the radiation of a blackbody relates to its temperature.
U12 Light Sound
The document discusses key concepts about light and sound including:
1. Light and sound travel as waves and have properties of wavelength, frequency, and speed. Light sources include the sun, stars, and artificial sources while sound is produced by vibration.
2. Light can be reflected, refracted, and absorbed differently by transparent, translucent, and opaque materials. It travels in straight lines and causes shadows. Reflection and refraction follow predictable angle relationships.
3. The human senses of vision and hearing perceive light and sound waves through the eye and ear, which have specific functional parts and ranges of detection. Various optical devices like lenses and mirrors manipulate light in practical applications.
Dynamic light scattering
This document discusses dynamic light scattering (DLS) for determining particle size in colloidal systems. It explains that DLS measures the hydrodynamic diameter of particles by analyzing how light scatters off particles undergoing Brownian motion. The speed of this motion is related to particle size via the Stokes-Einstein equation. DLS has applications in characterization of proteins, polymers, micelles and nanoparticles. It also allows monitoring of particle aggregation over time.
Reflection And Refraction
The document discusses several optical phenomena including reflection, refraction, diffraction, and polarization of light. It describes the properties of images such as whether they are real or virtual, upright or inverted, and larger, smaller, or the same size as the object. It also discusses the characteristics and applications of plane mirrors, concave mirrors, convex mirrors, refraction through different media, total internal reflection, optical fibers, mirages, prisms, rainbows, and why the sky appears blue and sunsets appear red.
Light
This document discusses the importance of proper lighting and light factors. It outlines the key aspects of sufficient light, uniform distribution, absence of glare and shadows, steady light sources, soothing light colors, and consideration of surrounding colors. Natural lighting is impacted by orientation, obstructions, window placement and interior room colors. Artificial lighting systems include direct, semi-direct, indirect, semi-indirect and direct-indirect methods. Light pollution can negatively impact human health, migratory birds, sea turtles, nocturnal animals and the ecosystem.
Raleigh and Mie scattering in remote sensing,
Rayleigh and Mie scattering are the dominant mechanisms by which sunlight is scattered in the atmosphere. Rayleigh scattering occurs when particles are much smaller than the wavelength of light and scatters light of short wavelengths more than long wavelengths, which is why the sky appears blue. Mie scattering occurs when particles are around the same size as the wavelength of light and results in scattering that is dependent on the size, shape, and composition of particles. Together these processes influence the light that reaches satellite sensors and enables remote sensing of the Earth.
Lighting
This document provides an overview of lighting design fundamentals and applications. It discusses basic light concepts like photometric quantities used to measure light, illumination quality, and different types of lamps like incandescent, fluorescent, and high intensity discharge lamps. It also covers topics like quantity and quality of light, lighting control systems, color, color rendering, and color temperature. The document is intended to educate about key lighting design topics and current lighting technologies and practices.
Light - Reflection and Refraction Class 10 Physics Complete
This presentation has complete information about the NCERT Science Chapter 'Light - Reflection and Refraction'.
Don't forget to like if you likr it!!
Reflection and refraction
1) Light behaves both as a wave and particle. It undergoes various phenomena like reflection, refraction, diffraction etc. which were explained by wave theory.
2) Reflection of light follows the laws - the angle of incidence equals the angle of reflection, and the incident ray, normal and reflected ray lie in the same plane. Reflection can be regular from smooth surfaces or diffuse from rough surfaces.
3) Spherical mirrors are either concave or convex. Concave mirrors converge parallel rays to a focal point, while convex mirrors diverge them from a focal point behind the mirror. Images formed depend on the position of the object.
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.
Characteristics of light
This presentation introduces the characteristics of light and the electromagnetic spectrum. It discusses the different types of electromagnetic waves including their frequencies and wavelengths. It describes the parts of a wave like amplitude, frequency, period, and wavelength. It explains that light travels at a finite speed of 299,792,458 meters per second. It also covers how the brightness of light decreases with the inverse square of the distance from the source.
Viewers also liked (20)
Light - Reflection and Refraction Class 10 Physics Complete
Light - Reflection and Refraction Class 10 Physics Complete
Similar to Light- General Properties
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.
L3 emr
The document discusses three main ways that energy can be transferred: conduction, convection, and radiation. Radiation is the only form that can occur in a vacuum and is therefore important for remote sensing. Electromagnetic radiation consists of oscillating electric and magnetic fields traveling at the speed of light. Remote sensing uses EMR from an energy source like the sun to illuminate targets. EMR interacts with and is affected by the atmosphere and earth's surface in complex ways like absorption, scattering, and reflection before being detected by sensors.
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.
Tour ofems booklet_web
This document provides an overview of the electromagnetic spectrum. It describes how electromagnetic waves transport energy and span frequencies from radio to gamma rays. Only a small portion of the spectrum is visible to the human eye. The document discusses different types of electromagnetic waves, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. It also covers topics like atmospheric windows, wave behaviors such as reflection and absorption, and how NASA instruments visualize data across the electromagnetic spectrum through false color images.
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.
01 properties of light
The document discusses various theories of light, including Newton's corpuscular theory, Huygens' wave theory, Maxwell's electromagnetic theory, and Einstein's quantum theory. It also discusses key properties of light such as reflection, refraction, interference, polarization, diffraction, and dispersion. Optical science refers to the study of light and its interactions with matter. Light can be defined as energy that the human eye is sensitive to and exists in the electromagnetic spectrum between X-rays and microwaves.
introduction to spectroscopy
Spectroscopy is the study of the interaction between electromagnetic radiation and matter. It involves using different types of radiation to excite the energy levels of atoms and molecules and analyze the absorbed and emitted radiation. Common techniques include absorption, emission, and scattering spectroscopy which are used in fields like chemistry, physics, astronomy, and forensic analysis. Spectrometers are devices used to measure spectra that provide information to identify substances.
01 properties of light
These lectures has prepared for postgraduate student (Ophthalmology) according to the curriculum of Bangladesh College of Physician and Surgeons (BCPS) and Bangabondhu Sheikh Mujib Medical University (BSMMU) Bangladesh
Spectroscopy assign
This document provides an overview of spectroscopy. It begins by defining spectroscopy as the study of the interaction between matter and radiated energy. It then discusses the history and development of spectroscopy. The document classifies different types of spectroscopy based on the type of radiative energy and nature of interaction. It provides examples of various spectroscopic techniques including electromagnetic spectroscopy, nuclear magnetic resonance spectroscopy, mass spectrometry, and fluorescence. Key terms related to spectroscopy are defined.
Rs and gis lect 3-6.pdf
The document discusses electromagnetic remote sensing and the electromagnetic spectrum. It describes the remote sensing process which involves energy sources, propagation through the atmosphere, interaction with earth surfaces, sensors to record reflected energy, and generation of sensor data. It also discusses the electromagnetic spectrum in detail, including different wavelength regions, wave and particle theories of electromagnetic radiation, blackbody radiation laws, and energy interactions within the atmosphere and with earth surfaces.
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.
PPT ABOUT SPECTROSCOPY Spectroscopy is the study of the absorption and emissi...
PPT ABOUT SPECTROSCOPY Spectroscopy is the study of the absorption and emissi...pawansinghshrinet789
Spectroscopy is the study of the interaction between electromagnetic radiation and matter. It involves splitting light into a spectrum using a prism or diffraction grating and analyzing the unique spectral lines of each element. This allows the composition, structure, and properties of matter to be determined at atomic and molecular scales across many fields including physics, chemistry, astronomy, and medicine. Important applications include determining atomic structure, studying stars and galaxies, medical imaging, and non-destructive material analysis. The history of spectroscopy began with Newton splitting white light with a prism in 1666.Remote Sensing
This document provides an overview of remote sensing basics. It defines remote sensing as acquiring information about an object without direct contact. It discusses key elements of the remote sensing process including energy sources, atmospheric interactions, data acquisition by sensors, and data analysis. It also covers topics like the electromagnetic spectrum, atmospheric scattering and absorption, atmospheric windows, and spectral signatures. The document is intended as an introduction to fundamental concepts in remote sensing.
Photometry and radiometry
This document provides an introduction to photometry and radiometry, which are the sciences of measuring light. It defines key concepts including:
- Radiant energy, which is the total amount of electromagnetic energy.
- Radiant flux (radiant power), which is the time rate of flow of radiant energy and is measured in watts.
- Radiant flux density, which is the radiant flux per unit area. When the flux is arriving at a surface it is called irradiance, and when leaving a surface it is called radiant exitance.
- Radiance, which is the amount of radiant flux in an elemental cone and provides a measure of the apparent brightness of a surface
Light energy and fundamental of light properties
This document provides a summary of the history and key concepts in optics. It begins with early discoveries in ancient Egypt and Greece. Important developments include Snell's law of refraction in the 17th century, Maxwell's equations unifying electricity and magnetism and proving light is a wave in the 19th century, and Einstein's work in the early 20th century showing light has particle-like properties. Key concepts covered include interference, diffraction, lasers, nonlinear optics, and ultrashort pulses. The Fourier transform is identified as playing a central role in optics.
Role of electromagnetic Radiation in Remote Sensing
This document provides an overview of electromagnetic radiation and its role in remote sensing. It defines key characteristics of electromagnetic waves like amplitude, wavelength, frequency, and speed. It describes the electromagnetic spectrum and different radiation types. Laws governing radiation like Kirchhoff's law, Stefan-Boltzmann law, and Wien's displacement law are covered. The document also discusses how radiation interacts with the atmosphere through scattering, absorption, and refraction.
introduction to spectroscopy
This document provides an introduction to spectroscopy. It defines spectroscopy as the study of the interaction between matter and electromagnetic radiation as a function of wavelength. It discusses the history of spectroscopy and describes different types of spectroscopy such as absorption, emission, scattering, and UV-visible spectroscopy. It also explains key concepts such as electromagnetic radiation, wavelength, absorption, emission, and applications of UV-visible spectrophotometry.
Electro magnetic radiation principles.pdf
The document discusses principles of electromagnetic radiation relevant to remote sensing. It describes how energy from the sun interacts with the atmosphere and earth's surface before being detected by sensors. The energy can be described using wave or particle models. As a wave, it has properties like wavelength and frequency. As particles called photons, it has energy levels defined by Planck's constant. The sun's energy comes from nuclear fusion and is emitted as blackbody radiation. Its spectrum and intensity are influenced by absorption, scattering, and transmission processes in the atmosphere.
Basic of Remote Sensing
This document provides an overview of the basics of remote sensing. It defines remote sensing as acquiring information about an object without direct contact. It discusses key components of the remote sensing process including data acquisition, the electromagnetic spectrum, atmospheric interactions, spectral signatures, and satellite platforms and orbits. Remote sensing draws from many areas and plays an important role in monitoring the Earth through satellite imagery.
2 Intro RS.pdf
Remote sensing involves obtaining information about objects through analysis of sensor data without physical contact. GIS is a computer system for storing and displaying geospatial data. Both remote sensing and GIS involve analyzing earth observations from different platforms like aircraft and satellites. Remote sensing uses sensors to detect electromagnetic radiation reflected or emitted from targets. GIS allows analyzing spatial patterns and relationships within collected geospatial data.
Similar to Light- General Properties (20)
Michael SeedsDana BackmanChapter 4Light and Telesc.docx
Michael SeedsDana BackmanChapter 4Light and Telesc.docx
PPT ABOUT SPECTROSCOPY Spectroscopy is the study of the absorption and emissi...
PPT ABOUT SPECTROSCOPY Spectroscopy is the study of the absorption and emissi...
Role of electromagnetic Radiation in Remote Sensing
Role of electromagnetic Radiation in Remote Sensing
Recently uploaded
Advanced Java[Extra Concepts, Not Difficult].docx
This is part 2 of my Java Learning Journey. This contains Hashing, ArrayList, LinkedList, Date and Time Classes, Calendar Class and more.
How to Make a Field Mandatory in Odoo 17
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
How to Add Chatter in the odoo 17 ERP Module
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
This Dissertation explores the particular circumstances of Mirzapur, a region located in the
core of India. Mirzapur, with its varied terrains and abundant biodiversity, offers an optimal
environment for investigating the changes in vegetation cover dynamics. Our study utilizes
advanced technologies such as GIS (Geographic Information Systems) and Remote sensing to
analyze the transformations that have taken place over the course of a decade.
The complex relationship between human activities and the environment has been the focus
of extensive research and worry. As the global community grapples with swift urbanization,
population expansion, and economic progress, the effects on natural ecosystems are becoming
more evident. A crucial element of this impact is the alteration of vegetation cover, which plays a
significant role in maintaining the ecological equilibrium of our planet.Land serves as the foundation for all human activities and provides the necessary materials for
these activities. As the most crucial natural resource, its utilization by humans results in different
'Land uses,' which are determined by both human activities and the physical characteristics of the
land.
The utilization of land is impacted by human needs and environmental factors. In countries
like India, rapid population growth and the emphasis on extensive resource exploitation can lead
to significant land degradation, adversely affecting the region's land cover.
Therefore, human intervention has significantly influenced land use patterns over many
centuries, evolving its structure over time and space. In the present era, these changes have
accelerated due to factors such as agriculture and urbanization. Information regarding land use and
cover is essential for various planning and management tasks related to the Earth's surface,
providing crucial environmental data for scientific, resource management, policy purposes, and
diverse human activities.
Accurate understanding of land use and cover is imperative for the development planning
of any area. Consequently, a wide range of professionals, including earth system scientists, land
and water managers, and urban planners, are interested in obtaining data on land use and cover
changes, conversion trends, and other related patterns. The spatial dimensions of land use and
cover support policymakers and scientists in making well-informed decisions, as alterations in
these patterns indicate shifts in economic and social conditions. Monitoring such changes with the
help of Advanced technologies like Remote Sensing and Geographic Information Systems is
crucial for coordinated efforts across different administrative levels. Advanced technologies like
Remote Sensing and Geographic Information Systems
9
Changes in vegetation cover refer to variations in the distribution, composition, and overall
structure of plant communities across different temporal and spatial scales. These changes can
occur natural.
PCOS corelations and management through Ayurveda.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
How to Build a Module in Odoo 17 Using the Scaffold Method
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
Main Java[All of the Base Concepts}.docx
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptxMohd Adib Abd Muin, Senior Lecturer at Universiti Utara Malaysia
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
How to Setup Warehouse & Location in Odoo 17 Inventory
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
How to Manage Your Lost Opportunities in Odoo 17 CRM
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...National Information Standards Organization (NISO)
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)Academy of Science of South Africa
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.How to Fix the Import Error in the Odoo 17
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
The History of Stoke Newington Street Names
Presented at the Stoke Newington Literary Festival on 9th June 2024
www.StokeNewingtonHistory.com
Recently uploaded (20)
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
Film vocab for eal 3 students: Australia the movie
Film vocab for eal 3 students: Australia the movie
How to Build a Module in Odoo 17 Using the Scaffold Method
How to Build a Module in Odoo 17 Using the Scaffold Method
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Manage Your Lost Opportunities in Odoo 17 CRM
How to Manage Your Lost Opportunities in Odoo 17 CRM
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
Light- General Properties
- 1. LIGHT General Properties By: Alex S. Marce BSEd III-B
- 2. INTRODUCTION Much of the information we get in astronomy is carried by “light”. 1. Location of light in the sky- gives position of a planet, moon or star. 2. Color- gives temperature, speed and direction of motion, chemical composition. 3. Brightness- gives distance, composition, periods of motion. 4. Size of light- gives size and distance information. *Adopted from Astronomy Chapter 2 handouts, Page 15
- 3. DEFINITION • The common term for electromagnetic radiation, usually referring to that portion visible to the human eye. However, other bands of the e-m spectrum are also often referred to as different forms of light. *(space.about.com) • Electromagnetic radiation that can be perceived by the human eye. It is made up of electromagnetic waves with wavelengths between 4 10-7and 7 10-7 meters. Light, and all other electromagnetic radiation, travels at a speed of about 299,728 km (185,831 mi) per second in a vacuum. *(http://science.yourdictionary.com/light)
- 4. SPEED OF LIGHT - The speed of light in empty space is constant. - C = 3x108 m/s = 670 billion mph - This finite speed has a real effect on information carried by light. it takes 11/4 seconds for light to reach us from the moon. it takes 81/3 minutes for light to reach us from the sun. it takes 41/3 years for light to reach us from the nearest star. *Adopted from Astronomy Chapter 2 handouts, Page 15
- 5. PROPERTIES OF LIGHT Wavelength- the distance between wave crest. The wavelength is indicated by the Greek symbol “λ”.
- 6. PROPERTIES OF LIGHT Frequency- the number of wave crests per second passing a point.
- 7. PROPERTIES OF LIGHT Color- is determined by wavelength ( or frequency).
- 8. SPECTRUM AND MORE PROPERTIES OF LIGHT Spectrum- is a condition that is not limited to a specific set of values but can vary infinitely within a continuum. The word saw its first scientific use within the field of optics to describe the rainbow of colors in visible light when separated using a prism; it has since been applied by analogy to many fields other than optics. *(www.wikipedia.org)
- 9. SPECTRUM AND MORE PROPERTIES OF LIGHT The study of light at different wavelengths is called “spectroscopy”. Spectroscopy pertains to the dispersion of an object's light into its component colors (i.e. energies). By performing this dissection and analysis of an object's light, astronomers can infer the physical properties of that object (such as temperature, mass, luminosity and composition). *(http://loke.as.arizona.edu/~ckulesa/camp/spe ctroscopy_intro.html)
- 11. QEUSTIONS ABOUT LIGHT Why do we see “visible” light? 1. Sun emits most strongly at these wavelengths. 2. Earth’s atmosphere blocks many other wavelengths. 3. Human eye efficiency detects available light.
- 12. QUESTION ABOUT LIGHT Is light really a wave? 1. Sometimes light acts like a particle “photon”. 2. Sometimes light acts like a wave. 3. It is really both –or neither- we just don’t have the right words to describe it completely.
- 13. Energy carried by light depends on wavelength (color, frequency): • Short wavelength- have more energy. • Long wavelength- have less energy. Example: 1. Blue light carries more energy than red light. 2. X-rays carry more energy than radio waves. Formula: E=hc/λ where E is the energy, λ is the wavelength, and h and c are constant numbers.