1075 Magdeburg’s hemispheres

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1075 Magdeburg’s hemispheres

The Magdeburg Hemispheres are two hemispheres which confine the atmospheric pressure inside them that is equal to the atmospheric pressure outside. This balance means that they can be separated without any effort. 
However, if the air from inside is pumped out, the pressure balance is destabilised. This means that a considerable amount of force is necessary to separate them. The Magdeburg Hemispheres are made of metal, with ground rims and plane in order to be placed on a plate for bell jar (code 1068) .
Diameter: 100 mm.

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