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“electronic photometer”
electronic photometer, photoelectric photometer
A photometer (instrument used for making measurements of light or electromagnetic radiation, in the visible range) which uses a photocell, a phototransistor, or a phototube to measure the intensity of light.
This entry is located in the following units:
electro-, electr-, electri-
(page 67)
-tron, -tronic, -tronics +
(page 11)