As we all know, the steam engine is the first power machine created by human beings with their own wisdom. Its birth has gone through a long process. It is the product of human long-term labor practice and the beginning of human society entering the era of mechanization. However, who is the real inventor of the steam engine? We say that the real inventor of the steam engine should be Watt of England.

Watt is the son of an English shipbuilder. He likes to use his head to study problems since he was a child. One day, Watt was boiling water by the stove. When water boils, steam lifts the lid, lifts the lid, and the lid falls down again. Then he put the pot back on the stove and the lid was pushed up again. This ups and downs aroused his great interest. He thought, "If you increase the water in the pot by thousands or tens of thousands of times, it will be very powerful ..." His ideas were very valuable and laid the ideological foundation for his later invention of the steam engine. At the age of 20, Watt worked as a repairman in a university in Glasgow, Scotland. In order to further study the steam engine, he taught himself Italian and German, and learned various mechanical manufacturing techniques. Once, when Watt was repairing a big turbine with a push-button gate, he found that the same cylinder of the big turbine had to be heated and cooled, which wasted heat and time. Watt thought, can't these wastes be eliminated?

1763 On a Sunday in May, Watt was walking on a pasture in Glasgow. Suddenly, he had a brilliant idea: the hot steam in the cylinder pushed the piston upward, and then led it to another small room for cooling, so that the same cylinder did not need to be heated and cooled.

Then, Watt immediately started the experiment. He installed a piston door on the steam engine and invented his own crank device to convert linear motion into rotary motion. In this way, Watt's steam engine was finally successfully trial-produced.