Задача 40331.

Based on the determination of the group velocity of light u, get the Rayleigh formula: u = v-lambda * dv / d lambda. We also show that u near lambda = (lambda) ´is the segment v´, intercepts the tangent to the curve v (lambda) at (lambda). "

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.

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