20200912 (Saturday)

3

Two "fabulous numeric coincidences", Celsius-Fahrenheit, Fahrenheit-Kelvin

Nine “transcendent” or “significant” points in four temperature scales: Celsius, Fahrenheit, Kelvin, and Rankine

Anders Celsius (1701-1744) was a Swedish physicist and astronomer who created a temperature scale: centesimal, or centigrade, or Celsius, whose unit is the degree Celsius. —Celsius temperature scale or Celsius scale.

Daniel Gabriel Fahrenheit (1686-1736) was a physicist who was born in a city of the Polish-Lithuanian Commonwealth then called Gdansk (German: Danzig), he was ethnically a German but lived most of his life in the Netherlands (Dutch: Nederland), so he was German-Polish-Dutch. He invented a temperature scale whose unit is the degree Fahrenheit. —Fahrenheit temperature scale or Fahrenheit scale.

William Thomson (1824-1907), first Baron of Kelvin, Lord Kelvin, was a British physicist, mathematician, and engineer. He determined the absolute zero of temperature, which is the lowest temperature theoretically possible. He invented a temperature scale whose unit is the degree Kelvin. —Kelvin temperature scale or Kelvin scale.

William Rankine (1820-1872) was a Scottish engineer and physicist who invented a temperature scale whose unit is the degree Rankine. —Rankine temperature scale, or Rankine scale.

The figures for each row are equivalent:

°C	°F	°K	°R
–273.15	–459.67	0	0
–217.594444	–359.67	55.555555	100
–173.15	–279.67	100	180
–40	–40	233.15	419.67
–17.7777	0	255.372222	459.67
0	32	273.15	491.67
37.7777	100	310.927777	559.67
100	212	373.15	671.67
301.4375	574.5875	574.5875	1034.2575

20200912 (Saturday)