Wouldn’t it be great to place a warm soda in an anti-microwave oven that cools it to a good drinking temperature within a minute? I know this couldn’t be done utilizing airwaves like a microwave oven does, but with all the technology out there, how come someone hasn’t come up with this? And I’m not talking about the big -86C freezers I see around the medical facility I work at; these are quite expensive, and the ones around here all have biohazardous material in them so I can’t cool down sodas in them. Someone please tell me why I can’t buy something like this.
[nitpick]
Microwave ovens do not use airwaves.
[/nitpick]
This question has been asked and answered before, more than once.
You can’t cool something down by just throwing energy at it.
My friend described a theory he heard once (Dunno where).
He said a cat scan (CT scan? whatever…) aligns hydrogen atoms in the target so they all spin in the same direction, and that by using an electromagnet spinning in the opposite direction of this spin, you could slow or even stop the spin, reducing the energy in the system.
I’m wondering if this would work, but there seem to be a few flaws. First off, is it even possible to slow the spin of atoms? And doesn’t a cat scan use electromagnets, too (In which case, the two magnetic fields would fight eachother, I imagine). Also, there’s the matter of conservation of energy. Where does the energy go? Maybe as friction/resistance to the magnet?
Seemed kind of questionable to me, but is at least something worth tossing up as an idea 
A Peltier Device is an example of something that can take heat out of a system with no moving parts. Disadvantage is you get a lot of excess heat on the other side.
These things are used in really small refridgerators.
This topic has been discussed very recently (see lin provided by Nametag above), so I’ll close this thread and direct further comment to the other one.