1. Name the scientist who invented this vacuum pump.
2. For what purpose the above experiment was done?
3. What was the diameter of each hemisphere?
4. How many horses in total were used to pull apart the hemispheres in the above experiment?
5. Why were horses unable to separate both the hemispheres?
Answers
1) Name the scientist who invented this vacuum pump.
Answer:- Robert Hooke, inventor of the vacuum pump and the first altitude chamber (1671)
2) For what purpose the above experiment was done?
Answer:- 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.
3) What was the diameter of each hemisphere?
Answer:- The Magdeburg hemispheres, around 50 cm (20 inches) in diameter, were designed to demonstrate the vacuum pump that Guericke had invented.
4) How many horses in total were used to pull apart the hemispheres in the above experiment?
Answer:- In one of the most famous demonstration experiments of the seventeenth century, he held two copper hemispheres together to make a sphere–but did not otherwise attach them–and evacuated the air from the sphere. He then hitched each hemisphere to a team of 8 horses, and they were unable to pull the hemispheres apart.
5) Why were horses unable to separate both the hemispheres?
Answer:- These hemispheres were then tried to pull apart from each other by the force of horses. But the air pressure on outside of combined hemispheres were much greater than the air pressure inside them. Thus the hemispheres were unable to separate from each other.