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.
We can, however, by chemical means arrive at an exact estimate of the active power, and for this purpose an actinometer is used.
From Scientific American Supplement, No. 492, June 6, 1885 by Various
It should register about 40 deg. with an actinometer used to test silver solutions.
From Photogravure by Henry R. Blaney
You may sometimes find that the actinometer indicates a very different exposure from what the eye would lead you to expect.
From Scientific American Supplement, No. 492, June 6, 1885 by Various
Herschell’s actinometer and Pouillet’s pyrheliometer, instruments for ascertaining the absolute heating effect of the sun’s rays, should, however, be more generally employed by meteorologists.
From A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility by Henry Negretti
A Johnson's actinometer is very useful to time the exposure.
From Photogravure by Henry R. Blaney
