Lmao I was kind of making a joke there, it’s an absolute scale so a negative number can’t actually exist, i.e. |-10| = 10
Additionally, temperatures expressed as negative Kelvin aren’t actually negative Kelvin in reality (“reality” meaning the actual physical existence in our material world) because, as you pointed out, the material would actually be more temperate. Negative Kelvin is useful to represent systems where adding energy decreases the entropy of the system, rather than the standard of increasing entropy, but to relate it to the actual heat or energy of the material gets murky.
That’s not what an absolute scale is tho. It’s just because of the second law of thermo. -10 K would never be 10 K (maybe that’s the joke? I don’t get it. Maybe it was intended as an absolute/absolute pun). Either way, to me did not make sense.
Further, based on this article it seems rather correct to tie negative Kelvin to actual temperatures, considering it’s been experimentally achieved…
CheezyWeezle@lemmy.world 6 months ago
Even if it was somehow 10° below absolute zero, it would still be 10° above absolute zero
GiveMemes@jlai.lu 6 months ago
I thought negative Kelvin were sometimes used to describe very very higher temperatures but I could be wrong.
CheezyWeezle@lemmy.world 5 months ago
Lmao I was kind of making a joke there, it’s an absolute scale so a negative number can’t actually exist, i.e. |-10| = 10
Additionally, temperatures expressed as negative Kelvin aren’t actually negative Kelvin in reality (“reality” meaning the actual physical existence in our material world) because, as you pointed out, the material would actually be more temperate. Negative Kelvin is useful to represent systems where adding energy decreases the entropy of the system, rather than the standard of increasing entropy, but to relate it to the actual heat or energy of the material gets murky.
GiveMemes@jlai.lu 5 months ago
That’s not what an absolute scale is tho. It’s just because of the second law of thermo. -10 K would never be 10 K (maybe that’s the joke? I don’t get it. Maybe it was intended as an absolute/absolute pun). Either way, to me did not make sense.
Further, based on this article it seems rather correct to tie negative Kelvin to actual temperatures, considering it’s been experimentally achieved…
www.mpg.de/…/negative-absolute-temperature