Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 447
ed no refraction, it would pursue its coursein a straight line to r\ but as a matter of fact it is found that such a ray isalways bent aside at O, if the medium A B c D is more or less dense thanthe other. If, for example, A B c D is water, and the medium above it glass,then the ray entering at O… … 398 LIGHT. so that R B will emerge from the glass parallel to its original direction at T O,If through the point of incidence, o, we suppose a line, O P, to be drawnperpendicular to the surface, A B, then we may say that the ray in pass-ing from the rarer medium (water, air, &c.) into the…
Inventions
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