For 10 points, name this effect in which a photon loses energy when it bounces off an electron.
A type of dual-energy densitometry based on this effect is used to measure the strength of bone. A method of using this technique to measure profiles adds a term containing the z- component of momentum. One formula governing this process can be corrected for radiation pressure by multiplying by the Breit-Dirac factor. In the original experiment demonstrating this effect, the secondary peak grew as the angle was increased. The shift generated by this effect is equal to quantity one minus cosine theta times h over mc, which is why h over mc is often called this effect's namesake "wavelength". In the low-energy limit, this process becomes Thompson scattering. For 10 points, name this effect in which a photon loses energy when it bounces off an electron.
A type of dual-energy densitometry based on this effect is used to measure the strength of bone.
Compton effect [or Compton scattering]