
How to be a supervillain with physics.
Daniel and Kelly’s Extraordinary Universe
00:00
How Do Cooling Lazers Work?
cooling lazers work by sending light at the right frequency for only some of the atoms to give off their energy. They absorb it, and then they naturally re emit it, but they go in another direction. This has the effect of overall slowing down the atom, because it takes some of its speed in one direction and points it in anotherdirection. But if you shoot it at a person, even if they're pretty cool, it wouldn't work. We just heat them up,. unless there happen to be exactly the right gas of sodium atoms. It is an example of a real ray, which can't actually cool a material. If you have atoms at ten degrees kelvin, this
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