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Davy Stump asked the Naked Scientists: While watching a show on space, I had a question. What would an object taken to Absolute Zero (0° K) look like? Would it be black, shiny, white, or what? Thank you,David StumpWhat do you think?
Which part of "You can't get to 0K" didn't you understand?
Quote from: Bored chemist on 03/12/2009 07:06:55Which part of "You can't get to 0K" didn't you understand?Shouldn't that be: "We can't observe 0K" ?
Quote from: Nizzle on 03/12/2009 08:46:07Quote from: Bored chemist on 03/12/2009 07:06:55Which part of "You can't get to 0K" didn't you understand?Shouldn't that be: "We can't observe 0K" ?No.It's true that we cant observe it but since it doesn't exist that doesn't tell you a lot.It's like asking you for a description of my sister.I don't have a sister so it isn't just that you have not observed her, but that she doesn't exist.
I'm betting 0K would turn the universe to scrambled eggs, which might explain why the closer we get to absolute zero the harder it is to get there.
I can confidently say with almost a perfect certainty (ie, without actually knowing) that the object would appear black because any light (or other EM radiation) emanating from it would mean that it had not yet reached absolute zero, and any light reflected off of it would mean that, not being 100% reflective (is anything 100% reflective?), some of the incident radiation would be absorbed, thus making the object not quite absolute zero. Combined with what BrdChmst said, Id revise my guess to be that it would approach the nastiest, most vicious sort of blackness yet experienced. I was 150+ feet underground in a cavern when someone turned off the light, and we experienced the blackest black Ive never seen!
What is there to discuss?One of the laws of thermodynmics says you can't get to absolute zero.