Davy's electrical egg

Date: 08/28/2007

Views: 95

Keywords: Davy's electrical egg

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Spherical aberration

Here is another optical aberration related to plano-convex lenses

Date: 08/28/2007

Views: 83

Keywords: Spherical aberration

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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: 76

Keywords: tubes, Crookes tubes, Wilhelm Röntgen

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First Scanning tunneling microscope

First Scanning tunneling microscope IBM Research Zurich 1981

Date: 06/05/2007

Views: 85

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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: 120

Keywords: IBM, SAGE

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Russian atomic bomb

This is the russian "RDS-1"-bomb

Date: 04/03/2005

Views: 144

Keywords: atomic bomb, RDS-1

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Homopolar motor at the Exploratorium

Date: 06/11/2007

Views: 96

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High voltage

A spark produced by a Wimshurst generator.

Date: 06/07/2007

Views: 77

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High voltage III

Date: 06/07/2007

Views: 75

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