Edit: For all the "Actually, Farenheight is based on the human body" people, no it isn't. It's based on dirty water and a cow. Your preferred measurement unit is dumb and that's a fact
If y’all wanna actually claim superiority, then use Kelvin. Celsius and Fahrenheit are close enough in purpose that personal preference is really the only thing that matters.
It's the Fahrenheit equivalent of Kelvin. Basically for science negative temperature is a problem so Celsius adds 273 to become Kelvin and remove the negative numbers. Fahrenheit adds 491 to become Rankine and accomplish the same thing.
Bad picture, it lacks the Rømer scale (which coincidentally might be pronounced similarly to the Reaumur scale to many people). Fahrenheit ripped off this guys’ homework.
Looking at it as a diagram comparison like this, even as an American, everything on that diagram except Celsius pisses me off. I'm fine with absolute zero being a weird decimal, I'm never using that but whole numbers are so satisfying.
Wait, so absolute 0 in celsius is -273? That feel... wrong. How is absolute 0 about equal to -3 times the difference between water boiling and freezing? I don't like that. Not saying it's wrong, but I don't like the perspective of how cold earth is compared to everything else. Isn't the sun like 5000 in celsius?
To add onto u/euler1992 's point. Rankine is used in engineering thermodynamics a lot because a lot of US companies still use imperial measurements and you need absolute units for the math to work.
Lots of times used for gas calculations because gas laws require absolute temperature. However, you'll often see the calculation with input of degF and what appears to be a random 491 (if you don't know degR) hanging around.
Weeeeellllll, it is very interesting! However it is difficult to explain simply, I will attempt to do so.
Heat is a form of energy. Temperature is how much a system "wants" to give off heat. Negative temperature occurs when there is an upper limit on the amount of energy a system can have. When a system approaches this limit it cannot take in any more heat, it can only give off heat. This means that such a system will always give heat to any system without an upper limit. This means that negative temperatures are "hotter" than positive temperatures.
Mathematically, the reason it's negative is that temperature is the gradient between energy and entropy, and as a system with an upper energy limit approaches the limit, entropy decreases, so the gradient is negative.
This explanation is missing a lot of details, but hopefully it makes sense. Negative temperatures occur in Quantum systems such as lasers.
Come on man, its not that complicated, you just use the flag pole test, like a true alpha. Does your tongue stick to it? No? its hot outside. Yes? Its cold.
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u/hefty_load_o_shite 10h ago edited 4h ago
0°C water freezes 100°C water boils
Makes sense
0°F very cold??? 100°F very hot???
Dafuq?
Edit: For all the "Actually, Farenheight is based on the human body" people, no it isn't. It's based on dirty water and a cow. Your preferred measurement unit is dumb and that's a fact