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MAGDEBURG HEMISPHERES IRON

MAGDEBURG HEMISPHERES IRON


To demonstrate the pressure exerted by the atmosphere. Two cast iron spheres, with a handle on each sphere, are held together and the air is evacuated using a vacuum pump connected to the air valve. The spheres become tightly closed together and cannot be pulled apart. The air valve tap can then be opened to let the air in enabling the spheres to be separated.


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