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![]() ![]() Subsequently, the freezing temperature of water has been redefined as exactly 32☏, and normal human body temperature as 98.6☏. He then defined 96☏ as the temperature "when the thermometer is held in the mouth or under the armpit of a living man in good health". Simply take 30 off the Fahrenheit value, and then half that number. Fahrenheit pioneered the manufacture of thermometers using mercury, and established 0☏ as the stabilized temperature when equal amounts of ice, water, and salt are mixed. Quick and easy Fahrenheit to Celsius conversion There's a simple rule to convert Fahrenheit to Celsius that should be good enough for general use. Proposed in 1724 by, and named after, the German physicist Daniel Gabriel Fahrenheit (1686–1736). Absolute zero is defined as -459.67☏.Ī temperature difference of 1☏ is the equivalent of a temperature difference 0.556☌. ![]() Therefore, a degree on the Fahrenheit scale is 1/180 of the interval between the freezing point and the boiling point of water. This puts the boiling and freezing points of water exactly 180 degrees apart. 1 Rankine R 0.5555555556 kelvin K Rankine to kelvin, kelvin to Rankine. 1 Fahrenheit F 255.9277777778 kelvin K Fahrenheit to kelvin, kelvin to Fahrenheit. kelvin K 1 Celsius C 274.15 kelvin K Celsius to kelvin, kelvin to Celsius. Canada retains Fahrenheit as a supplementary scale that can be used alongside Celsius, and in the UK the Fahrenheit scale continues to be used informally, especially in terms of expressing hot weather (although colder weather is generally expressed using the Celsius scale).įahrenheit is a thermodynamic temperature scale, where the freezing point of water is 32 degrees Fahrenheit (☏) and the boiling point 212☏ (at standard atmospheric pressure). Complete list of temperature units for conversion.The Fahrenheit scale was replaced by the Celsius scale in most countries during the mid to late 20th century, although Fahrenheit remains the official scale of the United States, Cayman Islands and Belize. ![]()
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