f the substance, j the larger is the index of j refraction. An absolute ^ ^^iV index of a given medium is obtained only when the^p^;^-^^i:z=^-^=^^^^^-^-^.=:^^=^i^^=E^;^ light passes from a vacuum into the medium, hence the^^^-0^^^^-^^^=j.-^=£r-^=^z^^3^ above method gives only relative indices.MFig.… … Light. 95 tion is a constant quantity. From experiments we learnthat when rays of Hght are passing from a medium ofhigh refractive power into one of low refractive power,the refracted rays rapidly approach the surface of therarer medium as the angle of incidence is increased.Then there must be an…
Physics
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