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Physics

Compton Scattering

Quick fact

Arthur Compton’s 1923 experiment showed that light behaves like a particle when it collides with an electron, earning him the Nobel Prize in Physics in 1927 and forever changing our understanding of electromagnetic radiation.

Why this is interesting

You've seen X-ray images, but did you know that when X-rays hit matter, some photons come out with lower energy? Why does that happen, and what does it tell us about the nature of light?