2013.012.030
Print, Photographic
One black and white photograph of showing a demonstration of the properties of Stanford R. Ovshinsky's chalcogenide glass threshold switch. Two probes are in contact in the foreground, while an oscilloscope screen in the background displays the characteristic cross-shaped pattern traced by the symmetrically cycling voltage in Ovshinsky switching. A red ink stamp on the verso has text that reads "Energy Conversion Devices, Inc., 1675 West Maple Road, Troy, Michigan 48084."
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