اسب ِ بخار asb-e boxâr (#)
Fr.: cheval-vapeur A unit that is used to measure the → power of engines and motors.
1) Metric horsepower is equal to the power required to carry a load of 75 kg over a distance
of one meter in one second. It is equivalent to 746 → watts.
2) British (US) horsepower is the rate of work when 33,000 foot-pounds of
work are done per minute.
The horsepower was defined by James Watt (1736-1819), the inventor of the steam engine,
to compare the output of steam engines with the power of draft horses.
He determined that a horse is typically capable of a power of 550
foot-pounds per second. → horse; → power. Asb-e boxâr "vapor horse," translation of Fr. cheval-vapeur, from
asb, → horse, + boxâr, → vapor. |