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An elementary book on electricity and magnetism and their applications (1919)

Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 97

An illustration from An elementary book on electricity and magnetism and their applications, 1919, leaf 97
land (an American scientist), and of others, have shownthat the work represented by one joule (watt second) is equiva-lent to the heat represented by practically 0.2-1 of a calorie.Consequently, the total number of calories of heat produced, in onesecond by the current passing through the wire in a… … Coil of Resistance Wire Fig. 36. —Simple form of elec-tric calorimeter. ELECTRIC POWER AND HEATING EFFECTS 77 H = 0.24 PRtwhen H= Heat in calories, /= Current in amperes,R = Resistance in ohms, f = Time in seconds. This experimental fact, or law of nature, is sometimes calledJoules Law. By…

Electricity · Magnetism

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