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Real metric supremacists be washing their hands with napalm after that handshake
Rankine is there twice.
And it shouldn’t have degrees like Kelvin, right?
The Rankine scale is generally measured in degrees. That’s because it’s defined in terms of the Fahrenheit scale, which is also measured in degrees. i.e. 1 Rankine degree = 1 Fahrenheit degree.
This is not the case for the Kelvin scale, which is defined directly in terms of thermal energy: 1 Kelvin ≈ 1.38*10^-23 J. Coincidentally (but not really of course) this amount of thermal energy is such that an increase of 1 Kelvin corresponds to 1 degree Celsius.
This is rather pedantic, as you could easily define Rankine in terms of thermal energy as well. Some people do this and don’t say “degrees” in front of Rankine. Or, you could define the Kelvin in terms of the Celsius, and measure it in degrees.
tl:dr Rankine has degrees, but for mainly historical reasons.
P.S.: Kelvin actually also had degrees until 1968!
It does share a 0 with kelvin
And F and C share a -44
F and C share a -44
I thought it was -40
It is.
Maybe they got the 4 part mixed up from the old chem rhyme:
Johnny was a chemist, but Johnny is no more, because what he thought was H2O was H2SO4
It’s actually -40. Not 44.
Not if it’s an absolute scale, no. And then it does actually agree on what 0 is with Kelvin too.
Someone probably incorrectly wrote Réaumur degrees. (Copy of Celsius but ×0.8 for some reason; somehow stays kinda relevant in 1770-1920 Europe)
And had the same zero as Kelvin.
Remember kids, if it’s not metric it has nothing to do with science!
USGS uses imperial for a ton of publications. As a geographer, I had to get pretty comfortable with both standards.
Kelvin and Celsius are best buddies.
I like that °C and K don’t point at eachother.
Fun fact;
Fahrenheit and Celsius line up at -40
Fahrenheit and Kelvin line up at 575
Those numbers are not particularly useful, but they are fun to know.
I was about to make the same comment. I got bored in math class with a graphing calculator and figured it out lol.
I knew about the Fahrenheit and Celsius one as a kid (because the local weatherman pointed it out one winter) but I only looked up the Kelvin one a few years back.
Isn’t Rankine the Kelvin of Fahrenheit
Yes. And 0 people use it.
It was invented by some scottish guy long before we had the means to measure things that would need it, and ever since that multibillion-dollar satellite thing fell to pieces even American scientists use metric units, we learn them in every grade level’s science class and our scientific community has this understandable atmosphere of regret that Congress was too lazy to completely kill off imperial units when they had the chance
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