In 1650, Otto invented a vacuum pump that was designed to pull air out of whatever vessel to which it was connected. It contained a piston and an air-gun cylinder with one-way flap valves. In many subsequent experiments, he used it to study the effects of vacuum. The most famous involves two copper hemispheres, closed tightly with the air pumped out of them. The Vacuum pump is the Vacuum we use almost everyday to clean our houses.
No comments:
Post a Comment