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3 Physical Demonstration Models, 1900 onwards...
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Large Geissler Tube, c. 1900...
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Ferdinand Braun's Cathode Ray Tube, c. 1900...
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Group of Physical Demonstration Tubes, c. 191...
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2 Physical Demonstration Models with 9 Geissl...
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Electric Motor with 10 Geissler Tubes, c. 191...
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Cathode Ray Tube according to Crookes...
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Ampère Table, c. 1900...
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Van de Graaff Generator, c. 1950...
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Physical Demonstration Model by Ducretet, c. ...
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Ruhmkorff Induction Coil, c. 1910...
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Demonstration Model of a Water Pump, c. 1910...
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2 Physical Demonstration Models, c. 1900...
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French Induction Coil, c. 1900...
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Cast-Iron Vacuum Pump, c. 1910...
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English 18th Century Ebony Pantograph...
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German Aneroid Barograph by Otto Bohne, Berli...
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Volta Low-Current Arc Lamp, c. 1910...
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Celestial Globe by Gussoni & Dotti, 1892...
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Equinoctial Sundial by Andreas Vogler, c. 177...
