photon

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pho·ton

 (fō′tŏn′)
n.
The elementary particle of light and other electromagnetic radiation; the quantum of electromagnetic energy. The photon is the massless, neutral vector boson that mediates electromagnetic interactions.

pho·ton′ic adj.

photon

(ˈfəʊtɒn)
n
(Atomic Physics) a quantum of electromagnetic radiation, regarded as a particle with zero rest mass and charge, unit spin, and energy equal to the product of the frequency of the radiation and the Planck constant

pho•ton

(ˈfoʊ tɒn)

n.
a quantum of electromagnetic radiation, usu. considered as an elementary particle that is its own antiparticle and that has zero rest mass and charge and a spin of one.
[1926; < Greek phōt- (see phot) + -on1]
pho•ton′ic, adj.

pho·ton

(fō′tŏn′)
The smallest unit of light or other electromagnetic energy, having no mass and no electric charge. Photons behave both as particles and waves. See Note at electromagnetic radiation.

photon

A unit or quantum of electromagnetic radiation.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.photon - a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle
gauge boson - a particle that mediates the interaction of two elementary particles
electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
Translations

photon

[ˈfəʊtɒn] Nfotón m

photon

[ˈfəʊtɒn] nphoton mphoto opportunity nséance f de photos (pour la presse)photo-sensitive [ˌfəʊtəʊˈsɛnsɪtɪv] adjphotosensiblephoto session nséance f photophoto shoot photo-shoot [ˈfəʊtəʊʃuːt] nséance f photo

photon

nPhoton nt
References in periodicals archive ?
This process is characterized by the absorption of an x-ray photon by an atom, which then transfers its energy to a core-shell electron.
Valence or higher-energy level electrons from the target move into these lower orbits to fill the gap and an X-ray photon is released (Charles Sturt University, 2002; Garip, 1998).
When an X-ray photon collides with an atom, the atom may absorb the energy of the photon and boost an electron to a higher orbital level or if the photon is very energetic, it may knock an electron from the atom altogether, causing the atom to ionize.
The next steps involve extending the analysis of surface structure to "a full quantitative analysis", according to McNeill, "This would require imaging at multiple X-ray photon energies.
2]/atom, the values are taken from [6]; co is the fluorescent yield, values taken from [7]; [sigma](E) is the ionisation cross-section at the proton energy E; N is the number of protons; 8 and d[omega] are the efficiency and solid angle of the detector; u is the linear coefficient of attenuation, the values are taken from [7-9]; [alpha] and P are the generalised angles between the normal to the target and the direction of movement of the proton and the x-ray photon, respectively (Fig.
Sectra's solution, based on a detector technology that counts each X-ray photon, generates a very low dose of radiation.
Newer, advanced CCD systems with a CsI phosphor have proven to be reasonably efficient, particularly when using higher kilovolt peak (kVp) techniques that produce more light photons per absorbed X-ray photon.
It is often assumed that the x-ray photon counting used in x-ray absorption is approximately a Poisson process in which the uncertainty is the square root of the number of counts [6,7].
Soft X-ray beamlines will be used to study the chemistry and structure of gases, liquids and solids by measuring the absorption of the light, as well as the energies and directions of various particles such as electrons emitted after a soft X-ray photon is absorbed.
A dynamic range of 104 makes the sensor superior to standard X-ray films, and the signal-to-noise ratio is almost limited by the X-ray photon noise.
h[phi] is the energy of the x-ray photon at the lower and upper ends of each interval N Step size h[omega] [DELTA]E h[omega] [DELTA]E Ta 6 10.
The author, using x-ray photon scattering spectroscophy (XPS) and an ISI SX-40 scanning electron microscope (SEM) in his analysis, was able to deduce the most likely cause of failure to be premature crosslinking of the adhesive.

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