One form of this phenomenon can be eliminated by setting a magnetic sphere’s permeability equal to permittivity in the Kerker effect. The KdV equation’s soliton solutions can be found with an “inverse transform” (10[1])named for this phenomenon. According to the optical theorem, the imaginary part of an “amplitude” measuring the (10[1])probability of this phenomenon equals k over 4 pi times the differential cross-section. Applying X-rays to a graphite target demonstrated one form of this phenomenon whose strength equals one minus cosine theta times a namesake wavelength (-5[1])of h over mc. The sky’s blue color is explained by Lord Rayleigh’s form of this phenomenon. For 10 points, particles strike each other and deflect in a form of what process named for Arthur Compton? (10[1])■END■