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0080347
THERMOMETER, 20th CENTURY.
A modern thermometer calibrated in the Celsius and Fahrenheit scales.
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0041250
FAHRENHEIT EXPERIMENT.
A page from Daniel Gabriel Fahrenheit's "Experimenta circa Gradum Caloris" ("Experiments concerning the Degrees of Heat"), published in the Philosophical Transactions of the Royal Society, London, 1724, which introduced the Fahrenheit scale of temperature measurement.