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- A photon (from Ancient Greek φῶς, φωτός (phôs, phōtós) 'light') is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic...107 KB (11,684 words) - 00:55, 27 October 2024
Single-photon emission computed tomography (SPECT, or less commonly, SPET) is a nuclear medicine tomographic imaging technique using gamma rays. It is...22 KB (2,663 words) - 17:01, 1 January 2024
dark photon (also hidden, heavy, para-, or secluded photon) is a hypothetical hidden sector particle, proposed as a force carrier similar to the photon of...18 KB (2,220 words) - 12:52, 4 October 2024
Electromagnetic radiation (redirect from Photon radiation)frequency of the photon, and h is the Planck constant. Thus, higher frequency photons have more energy. For example, a 1020 Hz gamma ray photon has 1019 times...82 KB (9,691 words) - 15:38, 25 October 2024
Solar sail (redirect from Photon Sail)Solar sails (also known as lightsails, light sails, and photon sails) are a method of spacecraft propulsion using radiation pressure exerted by sunlight...98 KB (11,552 words) - 03:50, 27 October 2024
typically made of many photons and better referred to as a wave front, not to be confused with the wave properties of the individual photon) that later combine...77 KB (8,623 words) - 10:20, 1 November 2024
Gamma ray (redirect from Gamma photon)wavelengths less than 10 picometers (1×10−11 m), gamma ray photons have the highest photon energy of any form of electromagnetic radiation. Paul Villard...60 KB (7,399 words) - 22:06, 21 October 2024
high frequency photons scattering following an interaction with a charged particle, usually an electron. Specifically, when the photon hits electrons...28 KB (3,865 words) - 04:37, 30 September 2024
transition from a high energy state to a lower energy state. The photon energy of the emitted photons is equal to the energy difference between the two states...23 KB (2,638 words) - 14:00, 23 September 2024
Two-photon excitation microscopy (TPEF or 2PEF) is a fluorescence imaging technique that is particularly well-suited to image scattering living tissue...34 KB (3,475 words) - 03:24, 31 October 2024
short: spontaneous or induced emission of a quantum of energy (such as a photon or a phonon) usually occurs shortly after the system is promoted to the...8 KB (938 words) - 22:35, 1 April 2024- Accordingly, if the experimental apparatus is changed while the photon is in mid‑flight, the photon may have to revise its prior "commitment" as to whether to...40 KB (5,179 words) - 02:05, 26 October 2024
- Mirror matter (redirect from Mirror photon)into mirror positronium and then decay into mirror photons. The mixing between photons and mirror photons could be present in tree-level Feynman diagrams...28 KB (3,051 words) - 10:38, 23 September 2024
- Quantum key distribution (redirect from Photon number splitting)than one photon, then Eve can split off the extra photons and transmit the remaining single photon to Bob. This is the basis of the photon number splitting...102 KB (11,760 words) - 01:03, 24 October 2024
- tensor, a second-order tensor (compared with electromagnetism's spin-1 photon, the source of which is the four-current, a first-order tensor). Additionally...21 KB (2,307 words) - 01:59, 25 September 2024
3D optical data storage (redirect from Two-Photon 3-D Optical Data Storage)Microscope Readout System in a Photochromic Polymer under Two-Photon Excitation". Japanese Journal of Applied Physics. 41 (8): 5160–5165. Bibcode:2002JaJAP...32 KB (4,191 words) - 22:07, 6 September 2024
light for some time after the radiation stops. Fluorescence occurs when a photon of the incoming radiation is absorbed by an orbital electron in a molecule...99 KB (11,054 words) - 13:12, 1 November 2024
Dynamic light scattering (redirect from Photon Correlation Spectroscopy)fluctuations are usually analyzed using the intensity or photon autocorrelation function (also known as photon correlation spectroscopy – PCS or quasi-elastic...33 KB (4,237 words) - 17:55, 23 September 2024
high photon energy is able to ionize atoms, causing chemical reactions. Longer-wavelength radiation such as visible light is nonionizing; the photons do...48 KB (4,877 words) - 14:51, 29 October 2024
X-ray spectroscopy (redirect from Photon-in-photon-out)electron from the inner shell of an atom is excited by the energy of a photon, it moves to a higher energy level. When it returns to the low energy level...18 KB (2,649 words) - 17:43, 1 October 2024
- principles proclaim that the behaviour of a free microparticle (electron or photon described by propagators on Feynman diagrams) is strictly deterministic
- tunable lasers, multiple-prism optics, and quantum interferometry. The two photons are entangled and according to local realism, their polarization planes
- dominated component is the photon noise, which is the intrinsic noise derived by the random nature of the incoming photons. The best noise performance
- interaction and functional architecture in the cat's visual cortex. The Journal of Physiology, 160, 106–154. FREE Full Text A pioneering study in which