ra·di·om·e·ter
(rā′dē-ŏm′ĭ-tər)n.
1. A device that measures the intensity of radiant energy, consisting of a partially evacuated glass bulb containing lightweight vertical vanes, each blackened on one side, suspended radially about a central vertical axis to permit their revolution about the axis as a result of incident radiation. Also called light mill.
2. An instrument that detects electromagnetic radiation.
ra′di·o·met′ric (-ō-mĕt′rĭk) adj.
ra′di·om′e·try n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
radiometer
(ˌreɪdɪˈɒmɪtə)n
(General Physics) any instrument for the detection or measurement of radiant energy
radiometric adj
ˌradiˈometry n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ra•di•om•e•ter
(ˌreɪ diˈɒm ɪ tər)n.
1. an instrument for demonstrating the transformation of radiant energy into mechanical work.
2. an instrument for detecting small amounts of radiant energy.
[1870–75]
ra`di•o•met′ric (-oʊˈmɛ trɪk) adj.
ra`di•om′e•try, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ra·di·om·e·ter
(rā′dē-ŏm′ĭ-tər) A device used to detect and measure radiation. Radiometers consist of a glass bulb containing a partial vacuum in which four diamond-shaped paddles are mounted on a central axis. Each paddle is black on one side and silvery on the other. When radiation, such as sunlight, strikes them, the black side absorbs radiation and the silvery side reflects it, resulting in a temperature difference between the two sides that causes the paddles to spin. The stronger the radiation, the faster the paddles spin.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
radiometer
an instrument for measuring the intensity of radiant energy, composed of vanes which rotate at speeds proportionate to the intensity of the energy source. — radiometric, adj.
See also: Sunan instrument for measuring the intensity of radiant energy, composed of vanes which rotate at speeds proportionate to the intensity of the energy source. — radiometric, adj.
See also: Instruments-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
| Noun | 1. |  radiometer - meter to detect and measure radiant energy (electromagnetic or acoustic)Crookes radiometer - electromagnetic radiometer consisting of a small paddlewheel that rotates when placed in daylight meter - any of various measuring instruments for measuring a quantity radiomicrometer - radiometer that is extremely sensitive Rayleigh disk - an acoustic radiometer consisting of a light disk suspended from a quartz thread; when exposed to a progressive sound wave its torque can measure velocity |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.