Knowing

The Standart Electrical Dictionary · 1892 · p. 2
the resistance of the conductor immersed, the watts can be calculated. This gives the bases for the determination of the heat-equivalent of electric energy. This is but an imperfect calorimeter, as it constantly would lose heat by the surrounding atmosphere, and would cease to operate as a calorimeter when the water was as hot as the wire normally would be, for then it would not absorb all the heat. IMG:8956969607833025625_098F75.jpg: Fig. 75. CALORIMETER. 99 STANDARD ELECTRICAL DICTIONARY. Candle . The generally accepted unit of illuminating power; there are three kinds in use as standards. (See Candle, Decimal--Candle, German Standard--Candle, Standard.)
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