Tdshimo
Tdshimo t1_j87x5sm wrote
Reply to -10000 degrees? by [deleted]
A good way to think about temperature in this context is that it is a measurement of how quickly atoms or particles are vibrating. When atoms/particles stop vibrating, they reach the lowest temperature it can possibly reach… at which point, our scales for measuring temperature stop, and nothing exists below it. This is at 0 Kelvin, –273.15°C, or –459.67°F. These represent the floor for temperature, so temperature cannot reach -10,000° because it’s physically not a thing.
Tdshimo t1_j6gqyjh wrote
Reply to ELI5: how do refrigerators work by T101yet
When you compress a gas - say, a volume the size size of a beachball and it squeeze it into a volume the size of a golf ball - also condenses all of the heat that was in the gas in the beachball into the golf ball size. This makes the compressed golf ball volume hotter than when it was the size of a beachball. If you cool the golf ball down to room temp using a fan, then release that gas back into the beachball, the beachball will be much colder than room temp.
That’s how refrigeration works, in principle. In practice, the gas is a special gas that works more efficiently than air, and the process of compression-cooling-decompression runs in a continuous loop (as long as the compressor is running).
Tdshimo t1_j880ajm wrote
Reply to comment by freeniechan in -10000 degrees? by [deleted]
What would have to happen? Advances in quantum physics that cause us to adjust our temperature scales. Quantum states do allow for temperatures below the floors for K/C/F scales. But quantum conditions don’t extend to the majority of matter that we observe as our physical universe.
So it’s possible to go lower than the floors of our temp scales very specific, extreme, and limited circumstances* that don’t apply to the whole of our physical universe; therefore, from a practical perspective, they don’t matter when measuring temperature of the physical systems we know.
*As far as we’re now aware, and can measure. This may change as we learn more.