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1. Can someone explain/ show what kind of geometry a reflector that is lunar has? 2....

1. Can someone explain/ show what kind of geometry a reflector that is lunar has?

2. The conditions that have to be true such that a light ray returns back to its original tragectory without the effect of the angle of incident?

3. how is the amount of light that return to the laser location maximized?

Answer 1-3 fully please!

  

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