Electromagnetic Spectrum
... clutches of a tiny atom. They travel together in packages called photons. Moving along as a wave with frequency and wavelength they travel at the velocity of 186,000 miles per second (300,000,000 meters per second) in a vacuum. The photons are so tiny they cannot be seen even with powerful microscop ...
... clutches of a tiny atom. They travel together in packages called photons. Moving along as a wave with frequency and wavelength they travel at the velocity of 186,000 miles per second (300,000,000 meters per second) in a vacuum. The photons are so tiny they cannot be seen even with powerful microscop ...
PPT
... Maxwell, Waves, and Light A solution to the Maxwell equations in empty space is a “traveling wave”… ...
... Maxwell, Waves, and Light A solution to the Maxwell equations in empty space is a “traveling wave”… ...
Synchrotron Radiation Sources and Optics
... Naturally collimated in vertical plane - clean well-matched to crystal monochromators undulators produce pencil beam of x-rays Brilliance is much greater than other sources photons/sec/source size/angular divergence ...
... Naturally collimated in vertical plane - clean well-matched to crystal monochromators undulators produce pencil beam of x-rays Brilliance is much greater than other sources photons/sec/source size/angular divergence ...
Solutions to the 2017 Sample Exam Paper
... openings were very narrow and very close together. He described the pattern of light that he observed on the screen on the other side of the black slide. (1) He observed a pattern of bright and dark vertical lines, with a bright line in the centre of the pattern in line with the light source and a p ...
... openings were very narrow and very close together. He described the pattern of light that he observed on the screen on the other side of the black slide. (1) He observed a pattern of bright and dark vertical lines, with a bright line in the centre of the pattern in line with the light source and a p ...
Coherence - Studentportalen
... We realize immediately that bending magnet radiation, having a broad wavelength spectrum is not a good candidate for filtering out coherent intensity. Undulator radiation, on the other hand, emits in a narrow bandwidth has a good potential (It is the brilliance that matters). This filtering is done ...
... We realize immediately that bending magnet radiation, having a broad wavelength spectrum is not a good candidate for filtering out coherent intensity. Undulator radiation, on the other hand, emits in a narrow bandwidth has a good potential (It is the brilliance that matters). This filtering is done ...
85mc
... In the above circuit, C denotes the balance position on the potentiometer wire AB. Which of the following procedures can shift C towards the end B? (1) replacing the driving cell X by one with a larger e.m.f. (2) adding a resistance in series with the ...
... In the above circuit, C denotes the balance position on the potentiometer wire AB. Which of the following procedures can shift C towards the end B? (1) replacing the driving cell X by one with a larger e.m.f. (2) adding a resistance in series with the ...
Powerpoint Lecture
... •Sparks were induced across the gap of the receiving electrodes when the frequency of the receiver was adjusted to match that of the transmitter. •In a series of other experiments, Hertz also showed that the radiation generated by this equipment exhibited wave properties. – Interference, diffraction ...
... •Sparks were induced across the gap of the receiving electrodes when the frequency of the receiver was adjusted to match that of the transmitter. •In a series of other experiments, Hertz also showed that the radiation generated by this equipment exhibited wave properties. – Interference, diffraction ...
الشريحة 1
... like the sun or the moon. A shadow of a solid object, using light from a compact source, shows small fringes near its edges. The speckle pattern which is observed when laser light falls on an optically rough surface is also a diffraction phenomenon. All these effects are a consequence of the fact th ...
... like the sun or the moon. A shadow of a solid object, using light from a compact source, shows small fringes near its edges. The speckle pattern which is observed when laser light falls on an optically rough surface is also a diffraction phenomenon. All these effects are a consequence of the fact th ...
What you will need to remember from year 10…
... When light hits the boundary the angle of incidence is greater than the critical angle and so is _______ reflected from one end to the other, making it possible to send ____ chunks of information Optical fibres can be used for _________ by sending electrical signals through the cable. The main advan ...
... When light hits the boundary the angle of incidence is greater than the critical angle and so is _______ reflected from one end to the other, making it possible to send ____ chunks of information Optical fibres can be used for _________ by sending electrical signals through the cable. The main advan ...
The Michelson Interferometer
... produce optical interference. These instruments are grouped under the generic name of interferometers. The Michelson interferometer causes interference by splitting a beam of light into two parts. Each part is made to travel a different path and brought back together where they interfere according t ...
... produce optical interference. These instruments are grouped under the generic name of interferometers. The Michelson interferometer causes interference by splitting a beam of light into two parts. Each part is made to travel a different path and brought back together where they interfere according t ...
Review
... 1. You have an organ pipe that resonates at frequencies of 300, 450, and 600 hertz but nothing is between. It may resonant at lower and higher frequencies as well. Is the pipe open at both ends or open at one end and closed at the other? How can you ...
... 1. You have an organ pipe that resonates at frequencies of 300, 450, and 600 hertz but nothing is between. It may resonant at lower and higher frequencies as well. Is the pipe open at both ends or open at one end and closed at the other? How can you ...
science
... representing fog, rain or smoke in the air, in a smoke-box it will be absorbed and scattered by the smoke. This fading of the signal is called attenuation. If a light wave or infra-red wave is to be transmitted through the air, it is possible that things can get between the transmitter and receiver ...
... representing fog, rain or smoke in the air, in a smoke-box it will be absorbed and scattered by the smoke. This fading of the signal is called attenuation. If a light wave or infra-red wave is to be transmitted through the air, it is possible that things can get between the transmitter and receiver ...
Photon diffraction
... and corpuscles “ [1] that electromagnetism and optics are substantially different physical branches, although they have some common specifics. Maxwell’ s equations describe electromagnetic phenomena but they cannot be applied also to light, to infrared, to ultraviolet radiation and to X-rays. Electr ...
... and corpuscles “ [1] that electromagnetism and optics are substantially different physical branches, although they have some common specifics. Maxwell’ s equations describe electromagnetic phenomena but they cannot be applied also to light, to infrared, to ultraviolet radiation and to X-rays. Electr ...
Diffraction
Diffraction refers to various phenomena which occur when a wave encounters an obstacle or a slit. In classical physics, the diffraction phenomenon is described as the interference of waves according to the Huygens–Fresnel principle. These characteristic behaviors are exhibited when a wave encounters an obstacle or a slit that is comparable in size to its wavelength. Similar effects occur when a light wave travels through a medium with a varying refractive index, or when a sound wave travels through a medium with varying acoustic impedance. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as visible light, X-rays and radio waves.Since physical objects have wave-like properties (at the atomic level), diffraction also occurs with matter and can be studied according to the principles of quantum mechanics. Italian scientist Francesco Maria Grimaldi coined the word ""diffraction"" and was the first to record accurate observations of the phenomenon in 1660.While diffraction occurs whenever propagating waves encounter such changes, its effects are generally most pronounced for waves whose wavelength is roughly comparable to the dimensions of the diffracting object or slit. If the obstructing object provides multiple, closely spaced openings, a complex pattern of varying intensity can result. This is due to the addition, or interference, of different parts of a wave that travels to the observer by different paths, where different path lengths result in different phases (see diffraction grating and wave superposition). The formalism of diffraction can also describe the way in which waves of finite extent propagate in free space. For example, the expanding profile of a laser beam, the beam shape of a radar antenna and the field of view of an ultrasonic transducer can all be analyzed using diffraction equations.