In process of time Otto Guericke added to these simple discoveries that of electric light, still further established by Isaac Newton, with his glass globe.

In 1654, the air pump was invented by Otto Guericke, a German. 1406,

A common experiment to prove the weight of air is that of the Magdeburg Hemispheres, a simple contrivance of Otto Guericke, a merchant of that city.

GUERICKE, OTTO VON, a German physicist, born at Magdeburg; experimented on air, and invented the air-pump (1602-1686).