title: Photon diffusion on the velocity sphere.
abstract: The concept of photon diffusion on the velocity sphere and the non-Euclidean diffusion equation (NED) are introduced to describe photon migration in highly forward-scattering random media. The NED covers the ballistic, transient, and developed diffusion modes of photon migration in random media. An approximate analytic solution to the NED is presented.
authors.forename: A Y
authors.initials: AY
authors.lastname: Polishchuk
authors.forename: R R
authors.initials: RR
authors.lastname: Alfano