= Arthur Holly Compton
{c}
{tag=Physicist}
= Arthur H. Compton
{c}
{synonym}
= A. H. Compton
{c}
{synonym}
= Arthur Compton
{c}
{synonym}
<Arthur Holly Compton> explained the angle-dependent change of <X-ray> <wavelength> by treating a <photon> as carrying both <energy> and <momentum>. For scattering from an initially stationary free <electron>, conservation gives $\lambda^{\prime}-\lambda=h(1-\cos\theta)/(m_ec)$. The <Compton scattering> shift therefore depends on angle and the <electron> <mass>, rather than on the illuminating <wavelength> alone. Comparing the measured scattered lines with this relation tested the particle-like energy–momentum account of radiation.<A Quantum Theory of the Scattering of X-rays by Light Elements by Arthur Holly Compton>[1923, quantum scattering derivation and experimental tests, especially pp. 494–495]{ref}
A <physicist> known for <Compton scattering>.
Nobel Prize biography: https://www.nobelprize.org/prizes/physics/1927/compton/biographical/
\Image[https://upload.wikimedia.org/wikipedia/commons/c/c3/Arthur_Compton.jpg]
{title=Portrait of Arthur Holly Compton}
{width=220}
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