What is meant by saying that a surface is optically flat?

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asked Sep 25, 2024 75.0k views

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Tokosh · Answer 1 · 2024-09-30T23:26:27+0000

Answer:

The perpendicular distance of any point on the surface to a given distance from the surface S can be expressed as a given number of wavelengths S = (N + m) λ

If m = zero (or effectively zero) then the surface is optically flat

What is meant by saying that a surface is optically flat?

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