Photonics Dictionary Definitions, Abbreviations, Illustrations, Terms listing by the letter K (Items 1 thru 38)

advertisement
SIGN IN / REGISTER PHOTONICS.COM DIRECTORY HOME PHOTONICS DICTIONARY PHOTONICS HANDBOOK
Photonics Dictionary Return to Dictionary home There are 38 terms that begin with 'K' Currently displaying records 1 thru 38. You are in set 1 of 1 1 kampometer A device designed to measure radiant energy, particularly... 2 Kapitza-Dirac diffraction The diffraction of a particle by a standing... 3 Kell factor In an interlaced scanning electro-optical system such as... 4 Kellner eyepiece An eyepiece consisting of a planoconvex field lens and a... 5 kelvin (K) The SI unit of temperature equal to 1°C. See absolute... 6 Keplerian astronomical telescope A simple form of astronomical telescope that uses a fixed... 7 keratometer See color perception test equipment; eye test... 8 kerf The material lost during a laser cutting or machining... 9 kernel See convolution... 10 Kerr cell A cell filled with a transparent material that, when placed... 11 Kerr effect A quadratic nonlinear electro-optic effect found in... 12 Kevlar E.I. duPont's trade name for an aramid yarn used as a... 13 keyhole welding A method of laser welding in which a high-power,... 14 keystone distortion A type of geometrical distortion that brings about a... 15 kidney-bean effect A dark region created by spherical aberration of an... 16 Kikuchi lines An array of spectral lines formed when a beam of electrons,... 17 kilo (k) In the SI system, prefix meaning one thousand,... 18 kilohertz (kHz) A unit of frequency that equals 1000... 19 kilojoule (kJ) A unit of energy or work that is equal to 1000 (103)... 20 kinematic mount A mount for an optic element or optics assembly, designed... 21 kinematics That portion of physics concerned with motion in the... 22 kinescope A cathode-ray tube that serves as a picture tube in a... 23 kinetic cooling An atmospheric nonlinear process unique to CO2 laser... 24 kinoform A phase hologram in which only the phase modulation of an... 25 kinoform filter A computer-generated kinoform used for data processing... 26 Kirchhoff's law For any point on a thermal radiator, at thermal equilibrium... 27 klystron A thermionic tube that has a velocity-modulated electron... 28 knife-edge test See Foucault knife-edge... 29 Knoop hardness A measurement of the hardness of a material as determined... 30 Koehler illumination A two-stage illuminating system for a microscope in which... 31 Koenig-Martens spectrophotometer A visual, single-unit spectrophotometer with a biprism and... 32 Kovar Westinghouse trade name for an alloy of iron, nickel and... 33 Kramers-Kronig relation Analysis of the reflection spectrum that allows the... 34 kron camera Astronomical detector consisting of a photocathode isolated... 35 krypton lamp An arc lamp that has its cavity filled with krypton to... 36 Kubelka-Munk theory A two-flux theory in which the radiation is assumed to be... 37 Kundt effect See Faraday... 38 Kynar Pennwalt's trade name for polyvinylidene fluoride, a... Currently displaying records 1 thru 38. You are in set 1 of 1 Return to Dictionary home Click to view listings of terms Term of the moment... saturation - 1. The decrease of the absorption (or gain) coefficient of a medium near some transition frequency when the power of the incident radiation near that frequency exceeds a certain value. As long as the absorption (or gain) coefficient is constant, the power absorbed (or emitted) by the medium is proportional to the incident power. However, there is always a limit to the rate at which the medium can absorb (or emit) power that is determined by the lifetimes of the energy levels involved. As this limit is reached, the induced transitions become rapid enough to affect the energy level populations, making them more nearly equal. 2. With respect to color, attribute of a visual sensation that permits a judgment to be made of the proportion of pure chromatic (in contrast to achromatic) color in the total sensation. The psychosensorial correlate, or nearly so, of colorimetric purity. See also chroma; Munsell chroma.	advertisement advertisement advertisement advertisement advertisement advertisement advertisement

PHOTONICS.COM DIRECTORY HOME SOCIETIES AND UNIVERSITIES ADVERTISING INFO CONTACT US PHOTONICS SPECTRA SUBSCRIPTIONS SITEMAP
Laurin Publishing provides comprehensive worldwide coverage of the photonics industry: optics, lasers, imaging, fiber optics, electro-optics, and photonic component manufacturing. © 1996-2009 Laurin Publishing. All rights reserved. Photonics.Com is Registered with the U.S. Patent & Trademark Office. Privacy Policy \| Terms and Conditions of Use Reproduction in whole or in part without permission is prohibited. webmaster@laurin.com