A vacuum pump is a device that draws gas molecules from a sealed volume in order to leave behind a partial vacuum. The job of a vacuum pump is to generate a relative vacuum within a capacity. The first vacuum pump was invented in 1650 by Otto von Guericke, and was preceded by the suction pump, which dates to antiquity.
invented by William Oughtred
The slide rule is a mechanical analog computer. The slide rule is used…
invented by Bartolomeo Cristofori
The piano is an acoustic, keyboard and stringed musical instrument in which the…
invented by Hans Lippershey
telescope is an optical instrument using lenses, curved mirrors, or a…
invented by Daniel Gabriel Fahrenheit
A thermometer is a device that measures temperature or a temperature gradient…
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Inventions that changed the world
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