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James Van Allen journal, 1951?-December 1954
Page 123
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Ferrites -------------- "General Ceramics and Steatite Corporation Keashey, New Jersey. Ferroxcube Corporation of America New York, New York Henry L. Crowley and Company West Orange, New Jersey ----------------------------------------------------------------- Look up Schrodinger's work on degeneration of wave motion into thermal heating in a disperse medium in which lambda ~> M.F.P. ------------------------------------------------------------------ A simple "thermometer" for balloon flights might make use of water (or other liquids of various melting points) to assure that temperature didn't fall below 0 degrees Celsius For example: [sketch/picture] drawing of motorized stirrer stirring liquid in container a small motor very slowly stirring the liquid. If the liquid freezes, the motor stalls or clutch slips. Could telemeter by [cam?] and microswitch the revolution of the shaft, for example, or voltage across a resistor in series with motor etc.
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Ferrites -------------- "General Ceramics and Steatite Corporation Keashey, New Jersey. Ferroxcube Corporation of America New York, New York Henry L. Crowley and Company West Orange, New Jersey ----------------------------------------------------------------- Look up Schrodinger's work on degeneration of wave motion into thermal heating in a disperse medium in which lambda ~> M.F.P. ------------------------------------------------------------------ A simple "thermometer" for balloon flights might make use of water (or other liquids of various melting points) to assure that temperature didn't fall below 0 degrees Celsius For example: [sketch/picture] drawing of motorized stirrer stirring liquid in container a small motor very slowly stirring the liquid. If the liquid freezes, the motor stalls or clutch slips. Could telemeter by [cam?] and microswitch the revolution of the shaft, for example, or voltage across a resistor in series with motor etc.
Van Allen Papers
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