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 very suitable instrument for timing the exposure of carbon tissue is Sawyer's actinometer.
From Photogravure by Blaney, Henry R.
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
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
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
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