Einstein's Theory of Relativity Tested at Tokyo Skytree

boing
10
  1. Build two optical lattice clocks.
  2. Bring one of them to the roof of the building.
  3. Push the clock off the roof of the building and use the other clock to measure how long it takes for the first clock to hit the ground.
  4. Calculate the height as 0.5•9.8•t².

Or use a barometer.

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