Quantum physics (quantum theory, quantum mechanics)
Quantum physics (quantum theory, quantum mechanics)
Quantum physics (quantum theory, quantum mechanics)
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Compton (1923) measured intensity of<br />
scattered X-rays from solid target, as<br />
function of wavelength for different<br />
angles. Nobel prize 1927.<br />
Compton scattering 2<br />
X-ray source<br />
Collimator<br />
(selects angle)<br />
Crystal<br />
(selects<br />
wavelength)<br />
Target<br />
<br />
Result: peak in scattered radiation shifts to longer<br />
wavelength than source. Amount depends on θ (but<br />
15<br />
not on the target material). A.H. Compton, Phys. Rev. 22 409 (1923)
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