Thursday, May 14, 2009

温度計の日(ondokei no hi): Day of Thermometer

They say May 14 is ondokei no hi (温度計の日), Day of Thermometer, because it is the birthday of the German physicist Daniel Gabriel Fahrenheit who invented the mercury thermometer and left the name of the scale of the thermometer. He was born on May 14, 1686.

According to Fahrenheit, water freezes at 32 degrees, and water boils at 212 degrees. He published this in 1724 and this scale is used in the USA, Canada, and England.
In Japan we use Celsius. According to Celsius, water freezes at zero degree and water boils at 100 degrees.

How about in your country?

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