# horsepower

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## horsepower,

unit of powerpower,
in physics, time rate of doing work or of producing or expending energy. The unit of power based on the English units of measurement is the horsepower, devised for describing mechanical power by James Watt, who estimated that a horse can do 550 ft-lb of work per sec; a
in the English system of units. It is equal to 33,000 foot-poundsfoot-pound,
abbr. ft-lb, unit of work or energy in the customary English gravitational system; it is the work done or energy expended by a force of 1 pound acting through a distance of 1 foot. It is equal to 1.356 joules.
per minute or 550 foot-pounds per second or approximately 746 watts. The term horsepower originated with James Watt, who determined by experiment that a horse could do 33,000 foot-pounds of work a minute in drawing coal from a coal pit.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## Horsepower

an obsolete subsidiary unit of power. It was first introduced in the 18th century and continues in use in various branches of technology, mainly in automotive engineering. Horsepower is designated as ls. (Russian, loshadinaia sila), PS (German, Pferdestärke), CV (French, cheval-vapeur), and HP or hp (English). In the USSR and certain other countries 1 hp = 75 kilograms-force per m/sec ≈ 735.5 watts (W); in the USA and Great Britain 1 hp = 550 ft.lb/sec ≈ 745.7 W.

## horsepower

[′hȯrs¦pau̇·ər]
(mechanics)
The unit of power in the British engineering system, equal to 550 foot-pounds per second, approximately 745.7 watts. Abbreviated hp.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

## horsepower

A unit of power equal to 746 watts.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

## horsepower

A measure of mechanical power equal to 550 ft-lb/s or 745.7 watts.

## horsepower

1. an fps unit of power, equal to 550 foot-pounds per second (equivalent to 745.7 watts)
2. a US standard unit of power, equal to 746 watts
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

## horsepower

The power of one horse. With regard to computers, which are clearly not compared to horses, the term is used to refer to speed in general. For example, "that machine has a lot of horsepower" just means that it is fast by comparison to contemporary models. See MHz.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Technical and economic efficiency of using fishing resources are based on fishing method, boat size, and engine horse power.
Most Edwardian farmers still relied heavily on horse power, but new technology was on the horizon...
Inspired by the hippotherapy sessions their disabled daughter Millie has received, Peter and Vicky Moffitt have set an ambitious goal of raising pounds 1,000 for Horse Power for Ability's Patient Fund.
Kia Cerato Koup is powered by 1.6 cc engine with 124 horse power, with manual or automatic transmissions, three equipment levels (LX, EX and SX), in addition to selections of nine exterior colours and three interior colours
GREATWOOD, the racehorse rescue charity that works with special needs children, has taken its Horse Power programme to the independent school Millfield, which has run a pilot programme at Marchant-Holliday, a residential site for five- to 12-year-old boys experiencing social, emotional and behavioural difficulties.
The Pride of Sidmouth has been fitted with new 135 horse power engines which will increase its rescue performances.
If you own a farm and are looking to add horse power to your available tools, FARMING WITH HORSES is a top pick reference.
Eugene's power required the help of horse power back in 1918.
Briggs & Stratton has introduced a powerful and environmentally friendly new range of V-Twin engines available in two displacements with six different horse power options between 18.65 26.1kW (25 35HP).
3 issue titled "Horse Power" makes an incorrect statement.
For, although the awesome 400 horse power 4.2 supercharged V8 motor launches the big cat to 60mph in five seconds, there are more frills than thrills.
cleaning cycle time when equipment was new; * 300 hr life for vanes/blades, impellers, impeller cases/cages; * 1000 hr life for bottom end liners; * 0.33 lb of steel shot per wheel horse power per hour.

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