Radiometer
Nuttall's Standard Dictionary of the English Language · 1890 · p. 148
ra-de-om'-e-ter, s. an instrument for taking altitudes; an instrument for testing the effect of radiation (L. radius, and meter).
Bu kavram başka kaynaklarda da geçiyor
Hawkins' Electrical Dictionary (1915)
The American Illustrated Medical Dictionary (1913)
The American Dictionary and Cyclopedia (1910)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
The Optical Dictionary (1904)
The Standart Electrical Dictionary (1892)
A Military Dictionary (1810)
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