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Horse-power

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A measure of force. Watt estimated the “force” of a London dray-horse, working eight hours a day, at 33,000 foot-pounds (q.v.) per minute. In calculating the horse-power of a steam-engine the following is the formula:—

P x A x L x N/33,000 deduct 1/10 for friction.

P, pressure (in lbs.) per sq. inch on the piston.

A, area (in inches) of the piston.

L, length (in feet) of the stroke.

N, number of strokes per minute.

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Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.

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Horse
Horse-bean
Horse-chestnut
Horse-faced
Horse Latitudes
Horse-laugh
Horse Marines (The)
Horse-milliner
Horse-mint
Horse-play
Horse-power
Horse Protestant
Horse-radish
Horse-shoes
Horse-vetch
Horse and his Rider
Horse-shoes and Nails (for rent)
Horsemen
Horsey Man (A)
Hortus Siccus
Horus

See Also:

Horse-power