2006-06-23 06:55:13 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
Otto von Guericke performed the Magdeburg experiment. He created the Magdeburg hemispheres, which were a pair of large copper hemispheres precisely cast so that their rims fit tightly together. When the rims were sealed with grease and the air was pumped out, the resulting sphere contained the world's first artificial vacuum.
Guericke's most famous performance (the Magdeburg Experiment) was carried out on 8 May 1654 before the Emperor Ferdinand III, and attracted crowds from all over Saxony. Before the emperor and a large crowd, Guericke greased the rims of the two hemispheres and carefully fitted them together. Then the local blacksmith began vigorously pumping the air from inside the sealed copper globe. After a while he was joined by his assistants, as the cranking of the pump gradually became more and more laborious.
The crowd then watched as a team of eight horses harnessed together was led into the square and attached to one hemisphere of the copper globe. Another team of eight horses was then attached to the other hemisphere. At a signal from Guericke, the two teams of horses strained forward in opposite directions, attempting to pull the two hemispheres apart, but no matter how hard they pulled, the horses could not separate the spheres. Guericke told the crowd that all that was holding the hemispheres together was the pressure of the air surrounding them. The vacuum inside the globe meant there was no opposing pressure to balance this great outer force. They were held firmly together by the air pressure of the surrounding atmosphere.
Click on the link below, which shows an illustration of the fantastic experiment.
http://www.tau.ac.il/~phchlab/experiments/vacuum/MAGDEB-S.gif
Hope this helps!
2006-06-23 07:10:43 · answer #1 · answered by Cap'n Eridani 3 · 1⤊ 0⤋
This Site Might Help You.
RE:
What is the Magdeburg experiment and why is it important to the study of air pressure?
2015-08-06 14:50:28 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Magdeburg built two brass hemispheres, put them together, and then pumped the air out of them. He then attached several horses to each hemisphere and drove them in different directions, to try to pull the two parts of the sphere apart. The horses couldn't.
He disproved Aristotle's notion that "nature abhors a vacuum," and showed that air pressure exerts a significant amount of force on things. This led to Boyle's Law, which describes the relationship between the volume of a gas and the pressure it is under, and the invention of the steam engine.
2006-06-23 07:05:42 · answer #3 · answered by Sandsquish 3 · 0⤊ 0⤋
Two hollow hemispheres were placed end to end and all the air was sucked out by a pump, two team of sevan horses each could not pull the two hemispheres apart.
This proved on a grand scale for the first time, the magnitude of the atmospheric pressure.
2006-06-23 07:09:01 · answer #4 · answered by ag_iitkgp 7 · 0⤊ 0⤋