December 22 is the day of the Thermometer
December 22 is the day of the Thermometer, a fundamental instrument for measuring body and environmental temperature. This date honors the invention of the thermometer and its importance, especially in medicine. The invention of the thermometer dates back to 1552, when Galileo Galilei created the thermoscope, a glass tube that measured the temperature of the environment. In 1624, the Jesuit Jean Leurechon named it the thermometer. Over the centuries, there have been several innovations, including the mercury thermometer developed by Gabriel Fahrenheit in 1714, which introduced the Fahrenheit scale. Jean-Pierre Christin, in 1743, created the Lyon thermometer and the Celsius scale. The mercury thermometer, widely used, has been perfected over time, with inventions such as the ear thermometer and, more recently, digital thermometers, which are preferred today for safety reasons.
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