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.
The mystery was not a new type of infernal machine as they imagined but merely a home-made actinometer!
From Sixteen Months in Four German Prisons Wesel, Sennelager, Klingelputz, Ruhleben by Henry Charles Mahoney
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
Another object was, to bring down specimens of air from different altitudes, for analysis; to try the effect of the actinometer at great elevations; and to note the hygrometric condition.
From Chambers's Edinburgh Journal, No. 456 Volume 18, New Series, September 25, 1852 by Robert Chambers
A very suitable instrument for timing the exposure of carbon tissue is Sawyer's actinometer.
From Photogravure by Henry R. Blaney
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
