00:00A cesium vacuum chamber traps unstable radioactive atoms right on the brink of blowing apart.
00:06How can a simple laser beam completely freeze physical time
00:10and stop radioactive atoms from decaying away forever?
00:14Common sense says leaving unstable matter alone prevents disruption,
00:19but the reality demands the exact opposite.
00:22Constantly flashing laser pulses measure the atom millions of times per second,
00:27forcing it to stay put.
00:28Every single observation traps the quantum state in place,
00:33just like a cesium vacuum chamber traps unstable radioactive atoms right on the brink of blowing apart.
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