International Practical Temperature Scale Is Established

Article abstract: An international conference established a standard scale of temperature values for worldwide use.

Temperature Scales

Galileo (1564-1642) invented the first crude “thermoscope” for measuring temperature, and the familiar liquid-in-glass thermometer was probably invented by Ferdinand II, Grand Duke of Tuscany, in about 1654. By 1714, Daniel Gabriel Fahrenheit was manufacturing mercury-in-glass thermometers and had established a temperature scale. He set 100 degrees at what he thought was the normal temperature of the human body and 0...

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