Changes

[[Absolute zeroZero]] is the theoretical [[temperature]] at which a [[system]] reaches its minimum possible [[energy]], corresponding to 0 [[Kelvin|K]].

*At [[Absolute Zero|absolute zero]], [[Molecule|molecular]] motion ceases.*It is the baseline for the [[Kelvin]] [[temperature]] scale.*[[Absolute zeroZero]] is equivalent to -273.15°C.*[[Absolute Zero]] represents the lower limit of the thermodynamic temperature scale.*Achieving [[Absolute Zero|absolute zero]] is impossible; it can only be approached asymptotically.*At [[Absolute Zero|absolute zero]], the entropy of a perfect crystal is exactly zero, per the third law of thermodynamics.*Near [[Absolute Zero|absolute zero]], quantum mechanical effects such as Bose-Einstein condensation can be observed.*Laboratories use techniques such as laser cooling and evaporative cooling to reach temperatures close to [[Absolute Zero|absolute zero]]. 

*The coldest recorded [[temperature]] in a laboratory setting is a fraction of a [[kelvin]] above [[Absolute Zero|absolute zero]].*Space probes use devices cooled to near [[Absolute Zero|absolute zero]] to detect faint [[infrared]] signals.