The time when watt invented the steam engine

Watt invented the steam engine in 1776. Watt's invention of the steam engine was a gradual process. James watt manufactured the first practical steam engine in 1776. In the early days, Watt mainly worked for roebuck Mining Company, and was responsible for repairing the newcomen steam engine of the mining company. In the process of repair, Watt found that newcomen's steam engine was inefficient, which prompted Watt to start improving the steam engine. After a series of experiments and improvements, Watt manufactured the first steam engine with practical value in 1776 and applied it to practical production. Watt obtained the core technology patent of steam engine in 1769 and the patent protection period of 14. However, before Watt began to study steam machinery, as early as 65438, pioneers had been exploring it. The steam engine is a reciprocating power machine, which converts the energy of steam into mechanical work. The appearance of the steam engine led to the industrial revolution in the18th century. Until the beginning of the 20th century, it was still the most important prime mover in the world, and then it gradually gave way to internal combustion engines and steam turbines. A steam engine needs a boiler to boil water to produce high-pressure steam. This kind of boiler can use wood, coal, oil or natural gas or even combustible garbage as heat source, and the steam expands to push the piston to do work.