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The Greeks had simple thermometers in the first century BC.

Galileo Galilei (1564-1642) Italian physicist, invented a basic air thermometer.

Daniel Gabriel Fahrenheit (1686-1736) was the German physicist who invented the alcohol thermometer in 1709, and the Mercury thermometer in 1714. In 1724, he introduced the temperature scale that bears his name - Fahrenheit Scale.

The Celsius scale, invented by Swedish Astronomer Anders Celsius (1701-1744), has 100 degrees between the freezing point (0 C) and boiling point (100 C) of pure water at sea level air pressure.

The Celsius temperature scale is also referred to as the "centigrade" scale. Centigrade means "consisting of or divided into 100 degrees". The term "Celsius" was adopted in 1948 by an international conference on weights and measures.

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11y ago

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