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.
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
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
Then note down everything you have done—kind of view, stop, speed of plate, exposure of each plate, and length of exposure of actinometer.
From Scientific American Supplement, No. 492, June 6, 1885 by Various
When you get home, the first thing to do is to get hold of a paint box and paint the underside of the glass of your actinometer to match the darkened paper.
From Scientific American Supplement, No. 492, June 6, 1885 by Various
A very suitable instrument for timing the exposure of carbon tissue is Sawyer's actinometer.
From Photogravure by Blaney, Henry R.
