<b>The optical properties of axially symmetric magnetic prisms</b>part 1: The study of rays in a plane of symmetry, and its application to the design of prism  -spectroscopes

Abstract

The optical properties of the magnetic field in the neighbourhood of two equal co-axial magnetic poles of opposite polarity used as a magnetic prism are discussed. In this first part attention is confined to rays in the plane of symmetry between the poles over which the radial component of the field vanishes everywhere.