01b_tambahan bab 11
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7/25/2019 01b_tambahan Bab 11
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when m0 = 0, E = pc = mc2 = hν
and the momentum of photon should be
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A phenomenon called Compton scattering,
first observed in 1924 by Compton,
provides additional direct confirmation ofthe quantum nature of electromagnetic
radiation. When !rays impinges on
matter, some of the radiation is scattered,
"ust as the visible light falling on a rough
surface undergoes diffuse reflection.
#bservation sho$s that some of the
scattered radiation has smaller frequency
and longer $avelength than the incident
radiation, and that the change in
$avelength depends on the angle through
$hich the radiation is scattered.%pecifically, if the scattered radiation
emerges at an angle & $ith the respect to
the incident direction, and if and are
the $avelength of the incident and
scattered radiation, respectively, it isfound that
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called Compton wavelength.
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