g isotropic medium, in which the constant propagational speedof light is n. With any point 0 of the edge of the prism as centre, describe a sphere * Liebisch, loc. cit. 5,6] Direct Refraction through a Prism 9 with radius l/H, and the surface of wave-slowness of the prism: produce theincideut… … Fig. 5. N: finally through M and P draw perpendiculars to the face of emergenceOB meeting the sphere in the points N and N respectively on the sameside of OB as the points M and P. Then OM and OP are the refracted, ONand ON the emergent wave-normals. We will first suppose that the incident wave is…
Optics
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