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The Fahrenheit Scale
First made in 1724 by a German scientist named Daniel Gabriel Fahrenheit. The US uses this only, for the rest of the world favored the Celsius, so it isn't very popular outside of the US if you're looking at the weather. The unit is DEGREES, which is equally spaced units between 2 points. The boiling point is 212 degrees, freezing point is 32 degrees, and the room temperature is 68 degrees. -
First Celsius Scale
In 1742, Anders Celsius made the first Celsius scale- except its boiling point was 0 and its freezing point was 100. After this, many nations started using Celsius except for the US, not changing the old unit of temperature they used in the Britain. Its unit is also degrees, boiling point of 100, freezing point of 0, and room temperature of 20 degrees. Even though the Fahrenheit and Celsius scales both can equal to each other degree-wise, 30 degrees on Celsius is much different from Fahrenheit. -
Changed
Famous Swedish botanist Carolus Linnaeus changed the Celsius scale to 0 degrees freezing point and 100 degrees boiling point- a reverse of the original, and the one we have now. After 204 years, people call this a centigrade scale as well. -
The First Kelvin Scale
Made in around 1854 by William Thomson- the 1st Baron of Kelvin. He was also a scientist. This scale could reach up to absolute zero (no movement of particles at all, dead cold) and very high temperatures, and unlike celsius and Fahrenheit, did NOT use degrees. It has its own unit- the kelvin represented with a (K). The boiling point is 373 K, freezing is 273 K, and room temperature is 293 K. Lowest temperature is reaching absolute 0. This scale is commonly used with physicists. -
The Units of Conversion
1 K = add 273 to the Celsius degree
1 degree Celsius = multiply it by 9/5 and add 32: F = (9/5)C + 32 degree Fahrenheit
1 degree Fahrenheit = subtract 32 and multiply the result by 5/9: C = (F - 32) * 5/9 celsius
