What did the Magdeburg experiment demonstrate about air pressure?

that horses are not intelligent enough to understand how to defeat atmospheric pressure

that the vacuum inside the two attached hemispheres has tremendous suction

that the horses could not get sufficient traction to pull the hemispheres apart

that atmospheric pressure on the earth's surface has tremendous force

1 answer

The Magdeburg experiment demonstrated that atmospheric pressure on the Earth's surface has tremendous force. In this experiment, two hemispherical brass shells were placed together, and when the air was evacuated from inside, it created a vacuum. The demonstration showed that the external air pressure was so strong that horses could not pull the hemispheres apart, illustrating the significant force exerted by atmospheric pressure.