![Wave Optics](http://s1.studyres.com/store/data/008537758_1-a6f65fa4a34fc8d643d5e67ee67dc646-300x300.png)
Wave Optics
... Conditions for interference For sustained interference between two sources of light to be observed, there are two conditions which must be met – The sources must be coherent, meaning they must maintain a constant phase with respect to each other – The waves must have identical wavelengths ...
... Conditions for interference For sustained interference between two sources of light to be observed, there are two conditions which must be met – The sources must be coherent, meaning they must maintain a constant phase with respect to each other – The waves must have identical wavelengths ...
HP unit 12 - wave optics student handout
... Conditions for interference For sustained interference between two sources of light to be observed, there are two conditions which must be met – The sources must be coherent, meaning they must maintain a constant phase with respect to each other – The waves must have identical wavelengths ...
... Conditions for interference For sustained interference between two sources of light to be observed, there are two conditions which must be met – The sources must be coherent, meaning they must maintain a constant phase with respect to each other – The waves must have identical wavelengths ...
Waves and Radiation
... An optical fibre is a long, thin, _______ rod made of glass or plastic. Light is _______ reflected from one end to the other, making it possible to send ____ chunks of information Optical fibres can be used for _________ or ENDOSCOPES (medical devices that are used to see inside the body) Words to u ...
... An optical fibre is a long, thin, _______ rod made of glass or plastic. Light is _______ reflected from one end to the other, making it possible to send ____ chunks of information Optical fibres can be used for _________ or ENDOSCOPES (medical devices that are used to see inside the body) Words to u ...
Second Semester Physics Review
... Which one of the following plots would produce a straight-line graph? ...
... Which one of the following plots would produce a straight-line graph? ...
Document
... 43. A radioactive sample, initially consists of only nuclide X, decays by the emission of an alpha ...
... 43. A radioactive sample, initially consists of only nuclide X, decays by the emission of an alpha ...
Pre-Lecture 25
... • Different atoms/molecules have different “spring strengths” - so different natural frequencies. • If this natural freq = that of impinging light, resonance occurs (recall ch 20) i.e. vibrations of electrons build up to high amplitudes, electrons hold on to the energy for “long” times, while passin ...
... • Different atoms/molecules have different “spring strengths” - so different natural frequencies. • If this natural freq = that of impinging light, resonance occurs (recall ch 20) i.e. vibrations of electrons build up to high amplitudes, electrons hold on to the energy for “long” times, while passin ...
Science Focus 8 Light and Optical Systems Topic 7 Topic 7 – The
... * Turn to page 238 and 239 and read “Looking at Wavelength”. The Wave Model of Light The WAVE MODEL OF LIGHT pictures light travelling as a wave. It doesn't explain everything about how light behaves but it helps us visualize certain things about it. Thinking about light travelling in waves, helps t ...
... * Turn to page 238 and 239 and read “Looking at Wavelength”. The Wave Model of Light The WAVE MODEL OF LIGHT pictures light travelling as a wave. It doesn't explain everything about how light behaves but it helps us visualize certain things about it. Thinking about light travelling in waves, helps t ...
Unit 13: EM Radiation and Waves
... • Mechanical waves – slinky, strings, and air (sound waves). • Mechanical waves need a medium in order to support the wave propagation. • Sound waves can not propagate through vacuum. • The spaceship movies have sound effects but outer space is QUIET ...
... • Mechanical waves – slinky, strings, and air (sound waves). • Mechanical waves need a medium in order to support the wave propagation. • Sound waves can not propagate through vacuum. • The spaceship movies have sound effects but outer space is QUIET ...
PHYSICS 100
... Thin film interference occurs when light incident on a thin film is partially reflected at the top surface and partially transmitted through the film. The transmitted ray reflects off the bottom of the film and travels up and through the top of the film. The two reflected rays have a path length dif ...
... Thin film interference occurs when light incident on a thin film is partially reflected at the top surface and partially transmitted through the film. The transmitted ray reflects off the bottom of the film and travels up and through the top of the film. The two reflected rays have a path length dif ...
Problem Set 16
... You are flying your personal rocketcraft at 0.9c from Star A toward Star B. The distance between the stars, in the stars' reference frame, is 1.0 light year. Both stars happen to explode simultaneously in your reference frame at the instant you are exactly halfway between them. Do you see the flashe ...
... You are flying your personal rocketcraft at 0.9c from Star A toward Star B. The distance between the stars, in the stars' reference frame, is 1.0 light year. Both stars happen to explode simultaneously in your reference frame at the instant you are exactly halfway between them. Do you see the flashe ...
SNC2D Optics Review
... Partial reflection and refraction occurs when an incidence ray strikes a new medium and some of the light rays are reflected and some of the light rays are refracted. Examples: light reflecting and refracting off of surface of the water, rear-view mirrors The amount of reflection depends on 1. The t ...
... Partial reflection and refraction occurs when an incidence ray strikes a new medium and some of the light rays are reflected and some of the light rays are refracted. Examples: light reflecting and refracting off of surface of the water, rear-view mirrors The amount of reflection depends on 1. The t ...
Diffraction-of-light
... We usually think of light as always traveling in straight lines, but when light waves pass near a barrier they tend to bend around that barrier and become spread out. Diffraction of light occurs when a light wave passes by a corner or through an opening or slit that is physically the approximate siz ...
... We usually think of light as always traveling in straight lines, but when light waves pass near a barrier they tend to bend around that barrier and become spread out. Diffraction of light occurs when a light wave passes by a corner or through an opening or slit that is physically the approximate siz ...
1. An object of mass 3 kg is placed on a smooth plane inclined at 30º
... C. had random motion onto which was imposed a drift velocity of a few millimetres per second when the switch was closed. D. had random motion onto which was imposed a drift velocity of a few kilometres per second when the switch was closed. E. had random motion until the switch was closed but now mo ...
... C. had random motion onto which was imposed a drift velocity of a few millimetres per second when the switch was closed. D. had random motion onto which was imposed a drift velocity of a few kilometres per second when the switch was closed. E. had random motion until the switch was closed but now mo ...
Light-matter Interaction
... two medium with different refractive indices, the light bends and this phenomenon is known as refraction. While the physical origin of refraction lies in the behavior of light velocity in different medium, the explanation of bending can be made by evaluating the behavior of a wavefront as it passes ...
... two medium with different refractive indices, the light bends and this phenomenon is known as refraction. While the physical origin of refraction lies in the behavior of light velocity in different medium, the explanation of bending can be made by evaluating the behavior of a wavefront as it passes ...
Optics_pal_mac_2012
... (17) A hydrogen electron transitions from n=3 to n=1. The electron ______ a photon. (18) The photon has an energy of ________ eV. (19) The photon has an energy of _______ J. (20) The frequency of the photon is __________ Hz. (21) The wavelength o f the photon is ________ m. (22) The photon (is/is n ...
... (17) A hydrogen electron transitions from n=3 to n=1. The electron ______ a photon. (18) The photon has an energy of ________ eV. (19) The photon has an energy of _______ J. (20) The frequency of the photon is __________ Hz. (21) The wavelength o f the photon is ________ m. (22) The photon (is/is n ...
I What is relativity? How did the concept of space-time arise?
... equations imply a speed for electromagnetic waves given by 1/ єoµo , where єo and µo are respectively the permittivity and permeability of free space. This when evaluated is in fact the speed of light (about 300,000 km/s). In spite of its stunning successes, it had one huge problem. Not all inertial ...
... equations imply a speed for electromagnetic waves given by 1/ єoµo , where єo and µo are respectively the permittivity and permeability of free space. This when evaluated is in fact the speed of light (about 300,000 km/s). In spite of its stunning successes, it had one huge problem. Not all inertial ...
Speed of light
![](https://commons.wikimedia.org/wiki/Special:FilePath/Earth_to_Sun_-_en.png?width=300)
The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its value is exactly 7008299792458000000♠299792458 metres per second (≈7008300000000000000♠3.00×108 m/s), as the length of the metre is defined from this constant and the international standard for time. According to special relativity, c is the maximum speed at which all matter and information in the universe can travel. It is the speed at which all massless particles and changes of the associated fields (including electromagnetic radiation such as light and gravitational waves) travel in vacuum. Such particles and waves travel at c regardless of the motion of the source or the inertial reference frame of the observer. In the theory of relativity, c interrelates space and time, and also appears in the famous equation of mass–energy equivalence E = mc2.The speed at which light propagates through transparent materials, such as glass or air, is less than c; similarly, the speed of radio waves in wire cables is slower than c. The ratio between c and the speed v at which light travels in a material is called the refractive index n of the material (n = c / v). For example, for visible light the refractive index of glass is typically around 1.5, meaning that light in glass travels at c / 1.5 ≈ 7008200000000000000♠200000 km/s; the refractive index of air for visible light is about 1.0003, so the speed of light in air is about 7008299700000000000♠299700 km/s (about 7004900000000000000♠90 km/s slower than c).For many practical purposes, light and other electromagnetic waves will appear to propagate instantaneously, but for long distances and very sensitive measurements, their finite speed has noticeable effects. In communicating with distant space probes, it can take minutes to hours for a message to get from Earth to the spacecraft, or vice versa. The light seen from stars left them many years ago, allowing the study of the history of the universe by looking at distant objects. The finite speed of light also limits the theoretical maximum speed of computers, since information must be sent within the computer from chip to chip. The speed of light can be used with time of flight measurements to measure large distances to high precision.Ole Rømer first demonstrated in 1676 that light travels at a finite speed (as opposed to instantaneously) by studying the apparent motion of Jupiter's moon Io. In 1865, James Clerk Maxwell proposed that light was an electromagnetic wave, and therefore travelled at the speed c appearing in his theory of electromagnetism. In 1905, Albert Einstein postulated that the speed of light with respect to any inertial frame is independent of the motion of the light source, and explored the consequences of that postulate by deriving the special theory of relativity and showing that the parameter c had relevance outside of the context of light and electromagnetism. After centuries of increasingly precise measurements, in 1975 the speed of light was known to be 7008299792458000000♠299792458 m/s with a measurement uncertainty of 4 parts per billion. In 1983, the metre was redefined in the International System of Units (SI) as the distance travelled by light in vacuum in 1/7008299792458000000♠299792458 of a second. As a result, the numerical value of c in metres per second is now fixed exactly by the definition of the metre.