![]() Through his experiments, he determined one horse could do about 33,000 foot-pounds of work in one minute - meaning a horse could lift a 33,000-pound weight one foot in one minute. To market his new product to this audience, Watt knew he had to come up with a way to compare the work of horses to the work of his invention. Unfortunately, comparing the steam engine to the Newcomen engine wasn’t effective marketing, as most of the population was still using horses for mechanical work. This new steam engine could do the same amount of work as the former Newcomen engine, but used only one-quarter of the fuel. In the late 1700s, a Scottish engineer named James Watt invented the first steam engine, which improved on a design pioneered by Thomas Newcomen in 1712. ![]() Today, it applies to boat and auto engines, but its original use was to describe the power of a steam engine. Horsepower is defined as a unit of power equal to 550 foot-pounds per second used to measure the power of an engine. ![]()
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