A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 410
as possible. Wait until the scale reading is steady andnote it. Make similar observations with the other surfaces of the cube,taking care in each case that the base of the cone of rays falls entirelyon the surface, and to preserve unaltered the resistance of the circuit.The deflections of the… … FIO. 386. -Determination of the radiating powers ofdifferent surfaces. Surface. Galvanometerdeflections. Radiating power. LampblackedPolishedDull copper -Papered 442212348395 100l\l x 100=47-9l±\ x 100 =78-72ff x 100=89-2 The emissivity of a given surface is generally defined as the quantityof heat…
Physics
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