actinometer
a device for measuring intensity of radiation, especially that of the sun.
Origin of actinometer
1Other words from actinometer
- ac·tin·o·met·ric [ak-tin-oh-me-trik, ak-tuh-noh-], /ækˌtɪn oʊˈmɛ trɪk, ˌæk tə noʊ-/, ac·tin·o·met·ri·cal, adjective
- ac·ti·nom·e·try, noun
- Compare actinograph.
Words Nearby actinometer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use actinometer in a sentence
For judging long exposures, the use of an actinometer (issued in many inexpensive forms) is helpful.
How to Observe in Archaeology | VariousWe then shift the paper in the actinometer so as to get a fresh portion under the tissue strips, or we substitute a new piece.
The Barnet Book of Photography | VariousNow refer to the actinometer and see what has taken place on the silver paper which we put into it.
The Barnet Book of Photography | VariousThe mystery was not a new type of infernal machine as they imagined but merely a home-made actinometer!
Sixteen Months in Four German Prisons | Henry Charles MahoneyA very suitable instrument for timing the exposure of carbon tissue is Sawyer's actinometer.
Photogravure | Henry R. Blaney
British Dictionary definitions for actinometer
/ (ˌæktɪˈnɒmɪtə) /
an instrument for measuring the intensity of radiation, esp of the sun's rays
Derived forms of actinometer
- actinometric (ˌæktɪnəʊˈmɛtrɪk) or actinometrical, adjective
- actinometry, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for actinometer
[ ăk′tə-nŏm′ĭ-tər ]
Any of several instruments used to measure radiation, such as a pyrheliometer.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Browse