Term: thermometer
Literally
meaning: "heat meausure"
Origin: Anc Greek
θερμός/thermos(=warm) >θέρω/thero(=to
warm)
μέτρον/metron (=meausure)
Coined/History
The first crude clinical
thermometer was invented by Italian Santorio Santorio who put a numerical scale
on his thermoscope which was an early device of showing tempratures changes
without scale. Previously, Italian
physicist and astronomer Galileo Galilei (1564-1642) had invented in 1597 a
rumintary water thermoscope. Finally in 1654, the first enclosed
liquid-in-a-glass thermometer was invented by the Grand Duke of Tuscany,
Ferdinand II (1610-1670). However he used alcohol as liquid that made this
thermometer inaccurate. The type of the first modern thermometer with mercury
and standardized scale, was invented by German physicist Daniel Gabriel
Fahrenheit (1686-1736) in 1714. In 1724 he introduced the standard temperature
scale known today with his name –Fahrenheit Scale which . In 1742 Swedish
Astronomer Anders Celcius (1701-1744) invented the Celsius temperature scale
which has 100 degrees between the freezing point (00C) and boiling
point (1000C) of pure water at see level air pressure.
Definition
Thermometer is an device to measure temperature using
materials that change when they are heated or cooled.
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