As one can see it also agrees with the result from the Example 1 while photon is assumed to be a rigid sphere of the zero radius. == Units == The SI unit of total cross sections is the square meter, m2, although smaller units are usually used in practice. The name cross-section arises because it has the dimensions of area. === Particle physics ===...
Found on
http://en.wikipedia.org/wiki/Scattering_cross-section
the ratio of the total power that an isotropic radiator would radiate when producing a radiation intensity equal to that of the re-radiation from a given receiving antenna in a specified direction, to the power flux density of the incident plane wave of specified polarization and direction of propagation
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=712-02-48
No exact match found.
