What device did Guericke invent to demonstrate a vacuum?
Telescope
Air pump
Barometer
Steam engine
Answer
The air pump, invented by Otto von Guericke in the 17th century, was a groundbreaking apparatus that played a pivotal role in demonstrating the existence and properties of a vacuum. This device allowed Guericke to evacuate air from a closed vessel, creating a vacuum within it.
The Vacuum Pioneer: A Quest into the World of Otto von Guericke