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  • Planck's constant/Definition
    ...f proportionality relating the energy of a photon to the frequency of that photon, named sfter Max Karl Ernst Ludwig Planck.
    175 bytes (26 words) - 04:40, 4 September 2009
  • Quantum mechanics/Related Articles
    *[[Photon dynamics in the double-slit experiment]] *[[Photon polarization]]
    473 bytes (45 words) - 14:05, 26 September 2010
  • X-ray absorptiometry
    #REDIRECT [[Photon absorptiometry]]
    35 bytes (3 words) - 08:23, 19 May 2009
  • Single-Photon Emission-Computed Tomography
    #REDIRECT [[Single photon emission computed tomography]]
    56 bytes (6 words) - 10:36, 15 May 2010
  • SPECT
    #REDIRECT [[Single photon emission computed tomography]]
    56 bytes (6 words) - 20:46, 14 March 2011
  • Single-Photon Emission-Computed Tomography/Definition
    #REDIRECT [[Single photon emission computed tomography/Definition]]
    67 bytes (7 words) - 10:36, 15 May 2010
  • Single-Photon Emission-Computed Tomography/Related Articles
    #REDIRECT [[Single photon emission computed tomography/Related Articles]]
    73 bytes (8 words) - 10:36, 15 May 2010
  • Quantum electrodynamics
    ...': simultaneous emission and absorption; ''Right'': electron on left emits photon.}} ...of the electromagnetic field|quantized]], introducing the concept of the [[photon]]. The strength of an electromagnetic field is determined by the number of
    2 KB (277 words) - 07:56, 13 October 2011
  • Single photon emission computed tomography/Definition
    ...e that visualizes the metabolism, or lack thereof, of tissues into which a photon-emitting tracer has been absorbed
    190 bytes (25 words) - 10:36, 15 May 2010
  • Compton scattering/Definition
    The decrease in energy (increase in wavelength) of an X-ray or gamma ray photon, when it interacts with matter.
    148 bytes (22 words) - 00:27, 2 May 2009
  • Photon absorptiometry
    ...ne, fat and other soft tissues. The source of ([[x-ray]] or [[gamma ray]]) photon beam is generated either from radioisotopes such as <sub>153</sub>[[gadolin |Single-photon absorptiometry (SPA)
    3 KB (365 words) - 20:59, 25 May 2010
  • Single photon emission computed tomography
    ...ssion-Computed,+Single-Photon |title=Tomography, Emission-Computed, Single-Photon |accessdate=2007-12-09 |author=National Library of Medicine |authorlink= |c
    2 KB (244 words) - 05:45, 10 February 2011
  • Quantum electrodynamics/Definition
    ...electric charge|electrically charged]] bodies based upon the exchange of [[photon]]s, the [[Quantization of the electromagnetic field|quanta]] of the [[Maxwe
    303 bytes (37 words) - 10:31, 12 October 2011
  • Atomic optical spectrometry/Definition
    Techniques of [[analytical chemistry]] that measure the interactions of [[photon]]s, in the visible, infrared or ultraviolet spectra, with elements being an
    361 bytes (51 words) - 16:03, 18 May 2010
  • Radiant flux
    In this case, ''Q'' refers to energy from [[Photon|photons]] (radiation energy). The units for flux are [J/sec] which is equa
    322 bytes (53 words) - 11:17, 8 May 2009
  • Photosynthetic pigment/Related Articles
    {{r|Photon}}
    259 bytes (27 words) - 22:10, 25 February 2010
  • Bone densitometry/Related Articles
    {{r|Photon absorptiometry}}
    470 bytes (49 words) - 00:25, 27 May 2010
  • Positron emission tomography/Related Articles
    {{r|Single photon emission computed tomography}}
    263 bytes (34 words) - 10:39, 15 May 2010
  • Anger camera/Related Articles
    {{r|Single-Photon Emission-Computed Tomography}}
    277 bytes (30 words) - 20:25, 8 May 2010
  • Light-harvesting complex/Related Articles
    {{r|Photon}}
    462 bytes (48 words) - 11:25, 22 March 2024
  • Chemiluminescence
    ...Consecutively, the product molecule loses its excess energy by emitting [[photon]]s (light quanta). The radiation of a molecule is called [[luminescence]] a Here ''h'' is [[Plancks' constant]] and ''h''&nu; is the energy of the photon emitted by NO<sub>2</sub><sup>*</sup>. Further, &nu; is the frequency of th
    2 KB (240 words) - 10:54, 7 May 2010
  • Quantization of the electromagnetic field/Related Articles
    {{r|Photon}}
    290 bytes (31 words) - 13:56, 12 October 2011
  • Nuclear medicine/Related Articles
    {{r|Photon}}
    431 bytes (50 words) - 10:31, 6 November 2008
  • Eye/Related Articles
    {{r|Photon}}
    568 bytes (74 words) - 06:00, 29 July 2009
  • Compton effect
    ...particles and photons have momentum. Compton measured [[Compton Scattering|photon-electron scattering]] in 1922 and received the Nobel in Physics in 1927 for
    2 KB (298 words) - 16:41, 18 September 2021
  • Photon
    ...wave]]. According to the [[Standard Model]] for elementary particles, the photon is the messenger particle mediating electromagnetic forces, in particular, ...mbda;, where ''c'' is the speed of light (&asymp; 3·10<sup>8</sup> m/s). A photon is a light quantum with energy ''E'' and momentum '''p''' associated with t
    4 KB (577 words) - 13:21, 3 November 2021
  • Normal distribution/Related Articles
    {{r|Photon}}
    575 bytes (70 words) - 07:35, 16 April 2010
  • Thylakoid/Related Articles
    {{r|Photon}}
    856 bytes (92 words) - 02:18, 7 March 2024
  • Double-slit experiment/Related Articles
    {{r|Photon}}
    486 bytes (61 words) - 16:04, 11 January 2010
  • Bone density/Related Articles
    {{r|Photon absorptiometry}}
    487 bytes (62 words) - 11:27, 11 January 2010
  • Radiographic equipment/Related Articles
    {{r|Photon}}
    461 bytes (59 words) - 19:54, 11 January 2010
  • Boson/Related Articles
    {{r|Photon}}
    540 bytes (68 words) - 11:28, 11 January 2010
  • Magnetometer/Related Articles
    {{r|Photon}}
    624 bytes (83 words) - 11:58, 31 December 2022
  • Gravitational lens/Related Articles
    {{r|Photon}}
    606 bytes (81 words) - 16:58, 11 January 2010
  • Photon/Related Articles
    Auto-populated based on [[Special:WhatLinksHere/Photon]]. Needs checking by a human.
    936 bytes (115 words) - 12:57, 15 March 2024
  • Contrast medium
    ...st agents per se, but yet other forms of medical imaging, such as [[single photon emission computed tomography]] (SPECT) and [[positron emission tomography]]
    795 bytes (107 words) - 23:48, 28 July 2008
  • Momentum/Related Articles
    {{r|Photon}}
    808 bytes (101 words) - 15:24, 16 March 2010
  • Ionizing radiation/Related Articles
    {{r|Photon}}
    929 bytes (121 words) - 18:00, 1 April 2024
  • Osteoporosis/Related Articles
    {{r|Photon absorptiometry}}
    1 KB (136 words) - 18:54, 6 February 2012
  • Instrumentation for radioactivity/Related Articles
    {{r|Single photon emission computed tomography}}
    961 bytes (109 words) - 16:51, 24 March 2024
  • Image registration
    ...), [[computed tomography#Single-Photon Emission-Computed Tomography|Single-Photon Emission-Computed Tomography (SPECT)]], [[fMRI]], [[contrast agent|contrast
    3 KB (370 words) - 10:07, 18 September 2009
  • Radiographic equipment
    == Photon sources== ...which is a device similar to a [[cyclotron]] that acts as a very intense [[photon]] source.<ref>http://www.adelphitech.com/publ/listPublic/Novel%20sources/Ka
    9 KB (1,395 words) - 08:22, 12 September 2013
  • Quantum electrodynamics/Related Articles
    {{r|Photon}}
    1 KB (160 words) - 14:49, 12 October 2011
  • Schrödinger equation/Related Articles
    {{r|Photon}}
    1 KB (143 words) - 10:13, 9 May 2011
  • Bone densitometry
    ...otope]] source. While '''single-photon absorptiometry (SPA)''' and '''dual-photon absorptiometry''' are accurate with a fresh isotope, the methods were logis ...e soft tissue in the area, which confuses the measurement. DPA uses two photon energy levels, one more absorbed by bone and the other more by soft tissue,
    5 KB (755 words) - 06:25, 12 September 2013
  • Radiation/Gallery
    ..., the propagated energy increases (expressed in units of electron volts of photon energy). See diagram also in article, [[Electromagnetic radiation]].}}
    1 KB (200 words) - 19:42, 19 July 2010
  • Elementary particle
    ...he force carriers or field ''quanta'', that fall under the categories of [[photon]]s, [[weak boson]]s, and [[gluon]]s.
    1 KB (184 words) - 10:03, 9 July 2012
  • Planck's constant/Related Articles
    {{r|Photon}}
    1 KB (157 words) - 19:35, 11 January 2010
  • Standard Model/Related Articles
    {{r|Photon}}
    1 KB (173 words) - 15:31, 15 October 2011
  • Radiation
    ...lium]] nuclei (&alpha;-radiation), or of high-energy massless particles, [[photon]]s (as in [[gamma radiation|&gamma;-radiation]]). Radiation can also be des ..., the propagated energy increases (expressed in units of electron volts of photon energy). See diagram also in article, [[Electromagnetic radiation]].}}
    3 KB (523 words) - 21:16, 22 July 2010
  • Stress test
    ...fusion imaging uses [[emission-computed tomography]] with either [[single-photon emission-computed tomography]] SPECT using either thallium or sestamibi iso
    1 KB (179 words) - 13:33, 7 February 2009
  • Quantization of the electromagnetic field
    ...tic) [[electromagnetic wave|field]] consists of discrete energy parcels, [[photon]]s. Photons are massless particles of definite [[energy]], definite [[momen ...[[Planck's constant]]. In 1927 [[Paul A. M. Dirac]] was able to weave the photon concept into the fabrics of the new [[quantum mechanics]] and to describe
    23 KB (3,635 words) - 05:33, 1 April 2024
  • Electromagnetic wave/Related Articles
    {{r|Photon}}
    1 KB (189 words) - 17:55, 17 April 2010
  • Speed of light/Related Articles
    {{r|Photon}}
    1 KB (196 words) - 05:55, 3 April 2011
  • Anger camera
    ...wide range of instruments in [[nuclear medicine]], especially the [[Single-Photon Emission-Computed Tomography]] (SPECT) and [[Positron-Emission Computed Tom
    1 KB (192 words) - 20:24, 8 May 2010
  • World Health Organization/Related Articles
    {{r|Photon absorptiometry}}
    2 KB (219 words) - 21:43, 11 January 2010
  • Computed tomography
    ...ssion-Computed,+Single-Photon |title=Tomography, Emission-Computed, Single-Photon |accessdate=2007-12-09 |author=National Library of Medicine |authorlink= |c
    6 KB (785 words) - 02:22, 15 May 2010
  • Light/Related Articles
    {{r|Photon}}
    2 KB (239 words) - 18:05, 11 January 2010
  • Aurora Borealis
    ...rious kinds of exchanges of [[energy]], resulting in the transmission of [[photon]]s of various frequencies -- including [[visible light]].
    2 KB (263 words) - 01:35, 1 September 2009
  • Magnetometer
    ...r and a "buffer [[gas]]" through which the emitted [[photons]] pass, and a photon detector, arranged in that order. ...photons from the lamp will pass through unhindered and be measured by the photon detector. At this stage the device can be said to be perfectly calibrated.
    9 KB (1,370 words) - 08:18, 12 September 2013
  • Wavenumber
    ...f 500 nm (green) has a wavenumber of 20,000 cm<sup>-1</sup> or 20&nbsp;kK. Photon energy and frequency are proportional to wavenumber: 10&nbsp;kK corresponds
    1 KB (239 words) - 22:14, 23 October 2020
  • Diagnostic imaging
    ...nuclide angiography]], [[Single photon emission computed tomography|Single Photon Emission Computed Tompography (SPECT)]] and [[ultrasonography]]. They are u
    4 KB (584 words) - 23:45, 25 July 2011
  • Frequency
    ...magnetic radiation, the [[energy]] (&thinsp;'''''E'''''&nbsp;) of a single photon is proportional to the frequency:
    2 KB (257 words) - 20:29, 21 July 2020
  • Electromagnetic spectrum/Related Articles
    {{r|Photon}}
    2 KB (294 words) - 14:14, 6 April 2024
  • Electromagnetic radiation/Related Articles
    {{r|Photon}}
    2 KB (308 words) - 09:08, 19 April 2024
  • Radiation-emitting product
    ...or particulate radiation" (see [[neutron]], [[electron]], [[positron]], [[photon]], [[proton]] or [[alpha particle]]," or produces
    2 KB (318 words) - 06:05, 31 May 2009
  • Nuclear medicine
    ...r cardiologists" are quite comfortable with cardiac imaging using [[Single-Photon Emission-Computed Tomography]] ([[SPECT]]), or measuring [[cardiac output]]
    2 KB (320 words) - 21:40, 13 May 2010
  • Nuclide
    ...h are grouped together as [[Beta radiation|beta decay]], and high energy [[photon]] emission called [[gamma radiation|gamma decay]].
    2 KB (381 words) - 22:48, 15 June 2010
  • Quantum biology/Bibliography
    * Fleming GR. (1998) Protein dynamics and photon echoes. ''Proc Natl Acad Sci U S A'' 95:15161-2.
    2 KB (304 words) - 21:15, 28 June 2011
  • Double-slit experiment
    If a beam of light ([[Photon|photons]]) is shone through a slit in a screen onto a second screen behind ...characteristics. ([[Arthur Holly Compton]]'s work on [[Compton Scattering|photon-electron scattering]] in 1922 established the particle nature of photons, t
    14 KB (2,229 words) - 06:14, 17 March 2014
  • Davisson-Germer experiment
    ...as a wave and that wavelength was related to its momentum as is true of a photon. The wavelength, lambda, a function of Planck’s constant and momentum (λ
    3 KB (447 words) - 10:19, 30 May 2009
  • Bremsstrahlung
    ...charged nucleus is less than the minimum energy required for creation of a photon.
    3 KB (411 words) - 12:12, 24 May 2008
  • Electromagnetic radiation
    ...nstein]]'s work of 1905, electromagnetic radiation is seen as a flux of [[photon]]s (also known as light quanta) through space. This view is reminiscent of
    3 KB (430 words) - 18:04, 8 March 2010
  • Photobiology
    ...[Photomedicine|medicine]], therapists employ various types of non-ionizing photon radiation protocols to treat diseases.
    4 KB (478 words) - 15:45, 3 August 2012
  • Niels Bohr
    ...an electron could move from an outer orbit to an inner orbit, emitting a [[photon]] of discrete energy, or conversely move from an inner orbit to an outer on
    3 KB (472 words) - 07:32, 20 April 2024
  • Standard Model
    ...e fields. So, for example, the quanta of the electromagnetic field are ''[[photon]]s''. The strength of an electromagnetic field is dictated by the number of | Photon
    21 KB (3,012 words) - 22:02, 24 October 2020
  • Thylakoid/Citable Version
    ...ir membranes housing the pigment molecules that absorb the [[energy]] of [[photon]]s of particular frequencies emitted by the sun, an event that initiates th ...e energy of photons radiated from the sun to energize electrons in special photon-absorbing pigment molecules embedded in the thylakoid membranes, electrons
    9 KB (1,262 words) - 16:26, 23 September 2013
  • Thylakoid
    ...ir membranes housing the pigment molecules that absorb the [[energy]] of [[photon]]s of particular frequencies emitted by the sun, an event that initiates th ...e energy of photons radiated from the sun to energize electrons in special photon-absorbing pigment molecules embedded in the thylakoid membranes, electrons
    9 KB (1,262 words) - 09:17, 11 October 2013
  • Matter (physics)
    ...nts, and also the [[meson]]s. Things which are not matter include light ([[photon]]s) and the other massless [[gauge boson]]s, such as [[graviton]]s and [[gl ...''[[E=MC2|E = mc<sup>2</sup>]]''. These new particles may be high-energy [[photon]]s ([[gamma ray]]s) or other particle–antiparticle pairs. The resulting p
    9 KB (1,454 words) - 17:15, 9 October 2013
  • Heisenberg Uncertainty Principle
    ...le, because there is always an error margin equal to the wavelength of the photon. Though the wavelength can be made shorter in order to reduce the error mar
    4 KB (628 words) - 09:17, 23 April 2011
  • Color
    Rods are extremely sensitive to light. A single [[photon]] is enough to send signals to the brain. ...go, Violet. The [[wavelength]] of monochromotic light (or of an individual photon) falls into a continuous range of about 400 to 750 nanometers. We split thi
    9 KB (1,500 words) - 05:09, 6 September 2021
  • Vacuum (quantum electrodynamic)
    {{Image|Photon-photon scattering.png|right|100px|Feynman diagram for photon-photon scattering in QED vacuum.<ref name=scatter/>}} ...ransition of an excited atom to a state of lower energy by emission of a [[photon]] even when no external perturbation of the atom is present.<ref name=Parke
    19 KB (2,820 words) - 09:33, 18 February 2012
  • Eye
    ...ive index]], meaning the image can be better focused without the loss of [[photon]]s inherent in reducing the aperture. When organisms moved to land, the le
    4 KB (723 words) - 05:40, 20 November 2009
  • Restless legs syndrome
    ...ate symptoms when given to patients with the syndrome. Results of [[single-photon emission computed tomography]] (SPECT) have suggested deficiency of [[dopam
    5 KB (620 words) - 12:37, 2 October 2013
  • Atom (science)
    ...ate with lower energy ''E''<sub>1</sub>. The frequency &nu; of the emitted photon is given by ''Absorption'' of a photon of energy ''h''&nu; occurs when ''h''&nu; "matches" an atomic energy differ
    18 KB (2,789 words) - 20:34, 27 October 2020
  • Photosynthesis
    ...in a downhill energy gradient &mdash; a downhill flow of energetic solar [[photon]]s &mdash; harvesting some of it to perform the work of [[Life|living]], re ...ecules, called [[Chlorophyll|chlorophylls]], to enable the [[energy]] of [[photon]]s radiated from the sun to energize electrons in those molecules, electron
    25 KB (3,545 words) - 17:36, 30 September 2018
  • Electromagnetic wave
    ...n to a state of lower energy (''E''<sub>1</sub>); during this transition a photon of energy proportional to the difference ''E''<sub>2</sub> - ''E''<sub>1</s <b>photon energy</b> (<i>h</i>&nu;), <b>cycle time</b> (<i>T</i> = 1/&nu;), and <b>in
    25 KB (3,994 words) - 17:54, 17 April 2010
  • Pathology
    ...t correlate chemical reactions with anatomical information, such as single photon emission computed tomography (SPECT) and positron emission tomography (PET)
    6 KB (810 words) - 16:23, 30 March 2024
  • Atomic optical spectrometry
    ...of visible, infrared or ultraviolet light produced by the interaction of [[photon]]s with the atoms of [[chemical element]]s. It is based on the properties o
    6 KB (888 words) - 13:04, 12 April 2011
  • Quantum biology
    ...tum mechanical description - from the absorption of light in the form of [[photon]]s by the photosynthetic apparatus to [[electron]] transfer processes susta
    8 KB (1,027 words) - 10:38, 18 July 2011
  • International Ultraviolet Explorer
    *The first detection of [[photon]]s at wavelengths less than 50 nm from any astronomical source apart from t
    7 KB (1,076 words) - 09:16, 6 March 2024
  • Zero-point energy
    Other experimental evidence includes [[spontaneous emission]]s of light ([[photon]]s) by [[atom]]s and nuclei, observed [[Lamb shift]] of positions of [[ener ...zero-point energy of the electromagnetic field as a thermal bath of real [[photon]]s, in an effect known as the [[Zero-point energy#Unruh-Davies effect|Unruh
    16 KB (2,522 words) - 14:33, 14 May 2023
  • Quantum mechanics/Advanced
    ...hoton]] with a discrete energy dependent on its frequency. This led to a [[Photon polarization|theory of unity]] between subatomic particles and electromagne ...electromagnetic field play an important role, such as in the emission of [[photon]]s by charged particles.
    37 KB (5,578 words) - 04:54, 21 March 2024
  • Radiology
    ...ssion tomography]] (PET), [[radionuclide angiography]] ([[RNA]]), [[single photon emission computed tomography]] ([[SPECT]])) radiopharmaceuticals, and quali
    9 KB (1,234 words) - 05:32, 31 May 2009
  • Nuclear waste management/Debate Guide
    ...the photon emitters are gone, relative to the end of year 1. In fact, the photon dose rate becomes so low that, according to US Department of Energy rules,
    21 KB (3,132 words) - 16:09, 27 April 2024
  • Fourier expansion electromagnetic field
    ...quantization of the electromagnetic field| quantization]] that leads to [[photon]]s (light particles of well-defined energy and momentum). Further the Fouri
    15 KB (2,576 words) - 00:07, 1 December 2010
  • Vacuum (classical)
    ...ntum vacuum]] moments of the fields can arise without sources by virtual [[photon]] creation and destruction.<ref name=Vogel>{{cite book |title=Quantum optic
    10 KB (1,488 words) - 12:29, 16 November 2011
  • Osteoporosis
    {{main|Photon absorptiometry}} Densitometry using [[photon absorptiometry]] is scored by two measures, the T-score and the Z-score. Sc
    49 KB (6,739 words) - 13:28, 10 February 2023
  • Normal distribution
    ...gy|psychologi]]cal measurements and [[physics|physi]]cal phenomena (like [[photon]] counts and [[noise]]) can be approximated well by the normal distribution ==== Photon counting ====
    46 KB (6,956 words) - 07:01, 9 June 2009
  • Electric charge
    ...nergetic particles exchanged by interacting charges and currents.<ref name=photon/> <ref name=photon>
    21 KB (3,138 words) - 05:36, 6 March 2024
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