A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)
Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 418
at other radiations, the so-called obscureradiations coming from a body that is not hot enough to beluminous, are reflected in the same way: RADIANT ENERGY. 393 EXPERIMENT. Place a candle (see Fig. 218) in front of a spherical metal mirror(No. LXXXIV) in such a position that the image of the candle… … FIG. 218. die to disappear, and then put exactly in the place of the flame ametal ball (No. LXIII) somewhat hotter than boiling water. Notethe effect upon the galvanometer. Move the ball a little to one sideof its present position and again note the effect. 317. Exchange of Radiations.—The rate at…
Physics
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