actinometer

Example Sentences

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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

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

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

From Photogravure by Blaney, Henry R.

A very suitable instrument for timing the exposure of carbon tissue is Sawyer's actinometer.

From Photogravure by Blaney, Henry R.

The actinometer consists of a large cylindrical thermometer bulb, with a scale considerably lengthened, so that minute changes may be easily seen.

From A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility by Negretti, Henry