actinometer
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A Johnson's actinometer is very useful to time the exposure.
From Photogravure by Henry R. Blaney
It should register about 40 deg. with an actinometer used to test silver solutions.
From Photogravure by Henry R. Blaney
A selenium actinometer has been described in the Comptes Rendus in a communication from M. Morize, of Rio de Janeiro.
From Scientific American Supplement, No. 484, April 11, 1885 by Various
With daylight, however, the light is constantly fluctuating, and this renders the use of an actinometer a necessity for correct exposure.
From Wireless Transmission of Photographs Second Edition, Revised and Enlarged 1919 by Marcus J. Martin
A very suitable instrument for timing the exposure of carbon tissue is Sawyer's actinometer.
From Photogravure by Henry R. Blaney
