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.

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 Martin, Marcus J.

It should register about 40 deg. with an actinometer used to test silver solutions.

From Photogravure by Blaney, Henry R.

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

A Johnson's actinometer is very useful to time the exposure.

From Photogravure by Blaney, Henry R.

The actinometer indicated an exposure of thirty seconds where in good light one would be right.

From Scientific American Supplement, No. 492, June 6, 1885 by Various