THEORETICAL AND APPLIED MECHANICS

TEORIJSKA I PRIMENJENA MEHANIKA  2001 Vol.26, pp.83-90

Summary: 

Dragi Radojević

Two examples of pure radiation fields

We investigate two Riemannian metrics. Each metric is expressed through two functions, one of them depending on only and the other depending on , the time, only. We compose the Ricci tensor. The functions composing the metric tensor are determined from the condition that the form of Ricci tensor corresponds to the energy-momentum tensor of the pure radiation field. This is the special case of the electromagnetic field in which the electric and magnetic three-vectors are equal and perpendicular.