Chemistry Question #126

Adil, a 17 year old male from the Internet asks on January 28, 2000,

Has absolute zero (0 K) ever been reached a laboratory?

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The answer

Barry Shell answered on January 28, 2000

Temperatures as low as 20 nK (a nanokelvin is 10-9 K) have recently been produced in a group of some 2000 rubidium atoms (Rb, chosen for its optical and magnetic properties). This is the lowest kinetic temperature ever achieved. Find out more at

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