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Davy's electrical egg
Date: 08/28/2007
Views: 645
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Spherical aberration
Here is another optical aberration related to plano-convex lenses
Date: 08/28/2007
Views: 527
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Original Crookes tubes
Original Crookes tubes and other cathode ray tubes from 1890-1900, used by Wilhelm Röntgen
Date: 06/25/2007
Views: 546
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First Scanning tunneling microscope
First Scanning tunneling microscope IBM Research Zurich 1981
Date: 06/05/2007
Views: 485
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IBM's SAGE
IBM's SAGE is a large semi-automated air defense system from the Cold War era.
Date: 06/13/2007
Views: 572
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Russian atomic bomb
This is the russian "RDS-1"-bomb
Date: 04/03/2005
Views: 1170
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Homopolar motor at the Exploratorium
Date: 06/11/2007
Views: 535
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High voltage
A spark produced by a Wimshurst generator.
Date: 06/07/2007
Views: 427
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High voltage III
Date: 06/07/2007
Views: 412
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