Word: watthour
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...foundation of the Integraph is a watthour meter of the same type as is commonly used in homes for recording electric power Integration is merely a mathematical way of expressing the sum of a series of numbers which vary according to a given equation. The mathematician, in using the machine to do away in an afternoon with months of calculating, plots equations on paper which is passed slowly under pointers in the 35-foot apparatus: Operators stationed along the length of the machine keep the pointers on the curves, and as these pointers move up and down, the power flowing...
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