Yeah but C makes more sense. 0-10 is cold but not freezing, 10-20 is cool, 20-30 is warm, 30-40 is hot, 40+ is "you're gonna die of heat exposure! Get inside, what are you doing?!" increasing in urgency with the number. If it's in the negatives, it's the same as the 40+ except "cold exposure".
It makes more sense in terms of our perception. But from a science perspective Klevin Kelvin makes more sense since you can't go lower than 0 K and negative temperature doesn't really make sense, since it'd mean something like negative energy.
Negative absolute temperature is a thing. Lasers exhibit negative temperatures when active, i.e. the lasing medium has a negative temperature expressed in Kelvin. Adding more energy doesn't increase its entropy, it just turns into more laser light. Any such system with bounded entropy can have a negative thermodynamic temperature.
I had a suspicion there was going to be a response like this. Never heard of it but sounds very interesting.
I doubt I'll properly understand it without a good YouTube video. I shall embark on a search
F has that too. Below 0, f it's cold. Above 100, f it's hot.
0-25 winter sports baby, 25-50 bleh it's wet and nasty, 50-75 chefs kiss, 75-100 let's hit the beach.