Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 621
A Fig. 416. AA /Fig. 416) is the interface between two media, and that0 is a source of light-waves in the medium in which thevare propagated with the greater velocity. When the wavefront reaches the point a. this point may be regarded as acenter of disturbance from which, by Huyghenss Principle,a… … ward to o. In the case assumed it will only have reachedsome point, p, nearer to a. A moment after o reaches a thepoint o1 in the wave front will arrive at av which in turnbecomes a new center of disturbance. The secondary wavefrom this point will be found passing through qx in the firstmedium, and…
Physics
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