photon
[fo´ton] a discrete particle (
quantum) of radiant energy.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
pho·ton (hν, γ),
(fō'ton), In physics, a corpuscle of energy or particle of light; a quantum of light or other electromagnetic radiation.
Farlex Partner Medical Dictionary © Farlex 2012
photon
(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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
pho·ton
(γ) (fō'ton) physics A corpuscle of energy or particle of light; a quantum of light or other electromagnetic radiation.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
photon
a quantum of radiant energy with a wavelength in the visible range of the ELECTROMAGNETIC SPECTRUM.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
Photon
A light particle.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
photon
The basic unit of radiant energy defined by the equation
E = hν
where
h is
Planck's constant (6.62 ✕ 10
−34 joule ✕ second), ν the frequency of the light and
E the energy difference carried away by the emission of a single photon of light. The term photon usually refers to visible light whereas the term
quantum refers to other electromagnetic radiations.
See quantum theory;
wave theory;
troland.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
pho·ton
(γ) (fō'ton) In physics, corpuscle of energy or particle of light; a quantum of light or other electromagnetic radiation.
Medical Dictionary for the Dental Professions © Farlex 2012