The Math would add up - eviltoast
  • KnowLimits@lemmy.world
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    10 months ago

    The mirrors are flat, and the sun has an apparent diameter of about half a degree, so at 100 km, the spot diameter would be 900 meters.

    You could use concave mirrors, but since you’re moving them independently, you’d also have to consider the diffraction limit for each one.