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Gaspar Schott's sketch of Otto von Guericke's Magdeburg hemispheres experiment.
Gaspar Schott's sketch of Otto von Guericke's Magdeburg hemispheres experiment.
The original Magdeburg hemispheres and Guericke's vacuum pump in the Deutsches Museum, Munich, Germany
The original Magdeburg hemispheres and Guericke's vacuum pump in the Deutsches Museum, Munich, Germany
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Vacuum pump and bell jar for vacuum experiments, used in science education during the early 20th century, on display in the Schulhistorische Sammlung
Vacuum pump and bell jar for vacuum experiments, used in science education during the early 20th century, on display in the Schulhistorische Sammlung ('School Historical Museum'), Bremerhaven, Germany
The Crookes tube, used to discover and study cathode rays, was an evolution of the Geissler tube.
The Crookes tube, used to discover and study cathode rays, was an evolution of the Geissler tube.
A glass McLeod gauge, drained of mercury
A glass McLeod gauge, drained of mercury
Light bulbs contain a partial vacuum, usually backfilled with argon, which protects the tungsten filament
Light bulbs contain a partial vacuum, usually backfilled with argon, which protects the tungsten filament