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Gravitational Attraction

The gravitational attraction between small masses is shown. This is the basic Cavendish experiment The first part of the video was cut off due to an error on the laser disc. In the first part of the video, it explains that the bar is suspended by a glass thread from a high ceiling. The video is from a laser disc published by the Optical Data Corporation, 30 Technology Drive, Warren, New Jersey 07060. I believe the copyright was from about 1978 The Living Textbook --- Physical Science Here is a link to a picture of the cover of the LD: https://drive.google.com/file/d/1M4BmRNlWt...