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2019-03-13: Will You Travel to Space?

  • 14:05: Now to remind you, the Brownian ratchet has this flywheel that turns a cog due to random motions of particles hitting the flywheel.

2015-03-25: Cosmic Microwave Background Explained

  • 02:12: In fact, it's called a thermal spectrum because the light is generated by the random motions of particles in the material.
  • 02:17: And those random motions are themselves a reflection of temperature.
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