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ninty · 01-29-2008, 02:33 PM

Coldest temperature physically possible is about -460F or -273C. That is absolute zero (0 K) which is the absence of thermal energy. Basically no atoms move at all. I don't think it is physically possible to remove all thermal energy, but they have gotten extremely close. Like to 0.0001 of a degree within absolute zero. That's called the Bose–Einstein condensate which was just on NOVA about 2 weeks ago.

Space is about 2.7K which is -454F, or -270C.

On earth coldest temp recorded was -89C, which is -128F or 183K in Antarctica. So -40 or -50 on the Canadian prairies isn't that unheard of.

	(#44)
ninty is Offline Major General Posts: 12,683 Join Date: Jan 2002 Location: Calgary	01-29-2008, 02:33 PM Coldest temperature physically possible is about -460F or -273C. That is absolute zero (0 K) which is the absence of thermal energy. Basically no atoms move at all. I don't think it is physically possible to remove all thermal energy, but they have gotten extremely close. Like to 0.0001 of a degree within absolute zero. That's called the Bose–Einstein condensate which was just on NOVA about 2 weeks ago. Space is about 2.7K which is -454F, or -270C. On earth coldest temp recorded was -89C, which is -128F or 183K in Antarctica. So -40 or -50 on the Canadian prairies isn't that unheard of.