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Temperature (and humidity) measurement: Difference between revisions
Temperature (and humidity) measurement (view source)
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Temperature scales use a unit called degrees apparently because some early thermonmeter designs were based on circular tubes containing liquid and had 360 equally spaced markings on them as a rough way of reporting relative 'temperatures' before any formal scales based on calibrated points was introduced. | Temperature scales use a unit called degrees apparently because some early thermonmeter designs were based on circular tubes containing liquid and had 360 equally spaced markings on them as a rough way of reporting relative 'temperatures' before any formal scales based on calibrated points was introduced. | ||
==Fahrenheit== | ==Fahrenheit== | ||
Daniel Gabriel Fahrenheit (24 May 1686 to 16 September 1736) visited Ole Remer in 1708. In 1709 Fahrenheit originated the alcohol-in-glass thermometer, and in1724 Fahrenheit developed the scale named after him based on 3 fixed points (a slightly modified version of this scale still called Fahrenheit is still used by some people in UK and is the official scale in a few countries such as the USA). | Daniel Gabriel Fahrenheit (24 May 1686 to 16 September 1736) visited Ole Remer in 1708. In 1709 Fahrenheit originated the alcohol-in-glass thermometer, and in1724 Fahrenheit developed the scale named after him based on 3 fixed points (a slightly modified version of this scale still called Fahrenheit is still used by some people in UK and is the official scale in a few countries such as the USA). | ||
== Rankine == | |||
Rankine is the name given to a scale starting at absolute zero (similar to Kelvin, but based on scale divisions that match Fahrenheit ones). | Rankine is the name given to a scale starting at absolute zero (similar to Kelvin, but based on scale divisions that match Fahrenheit ones). | ||