Klein–Nishina formula

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Science and technology

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What Wikipedia says

In particle physics, the Klein–Nishina formula gives the differential cross section (i.e. the "likelihood" and angular distribution) of photons scattered from a single free electron, calculated in the lowest order of quantum electrodynamics.

Excerpt from the Wikipedia article “Klein–Nishina formula”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Д.Ильин: vectorization, CC0, via Wikimedia Commons.