| MadSci Network: Physics |
It is actually a misconception that all motion stops at absolute zero. What actually happens at absolute zero is that a *MINIMUM* of motion is reached although that minimum is not zero. For instance, the electrons do not stop whirling around the nucleus even at absolute zero. Likewise, the quarks and gluons making up the nucleus do not stop moving and interacting, so radioactive decay *IS* still active at absolute zero.
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