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The Einstein–Szilard or Einstein refrigerator is an absorption refrigerator which has no moving parts, operates at constant pressure, and requires only a heat source to operate. It was jointly invented in 1926 by Albert Einstein and his former student Leó Szilárd , who patented it in the U.S. on November 11, 1930 ( U.S. patent 1,781,541 ).
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Common absorption refrigerators use a refrigerant with a very low boiling point (less than −18 °C (0 °F)) just like compressor refrigerators.Compression refrigerators typically use an HCFC or HFC, while absorption refrigerators typically use ammonia or water and need at least a second fluid able to absorb the coolant, the absorbent, respectively water (for ammonia) or brine (for water).
The original can be viewed here: Portrait of Albert Einstein and Others (1879-1955), Physicist - Original.jpg: . Modifications made by Bammesk . This is a featured picture on Wikimedia Commons ( Featured pictures ) and is considered one of the finest images.
Pixel art [note 1] is a form of digital art drawn with graphical software where images are built using pixels as the only building block. [2] It is widely associated with the low-resolution graphics from 8-bit and 16-bit era computers, arcade machines and video game consoles, in addition to other limited systems such as LED displays and graphing calculators, which have a limited number of ...
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Einstein and Szilard themselves named it the "Einstein Refrigerator" in the document shown in the article, notice the name in big letters and the signatures of both inventors. 77.215.46.17 20:59, 2 June 2010 (UTC) Here is support for moving this article to Einstein-Szilard refrigerator. Dannen, Geene (1997).
Albert Einstein's 1930 design for a fridge never got off the drawing board. A fridge design by Emily Cummins can benefit parts of the world where electricity is not available, as it is made from scrap materials and does not require power. Trevor Baylis invented the wind-up radio to help make communications in Africa easier. Goronwy counts down ...