Phillips, Percy · London : T. C. & E. C. Jack ; New York : Dodge Pub. Co. · leaf 26
dray are all in the same plane. This is the other law ofreflection. With these two laws as a starting-point itis a matter of pure geometry to investigate the reflectionof any sort of wave-front at any sort of surface. This isdone in books on Geometrical Optics, but it wouldperhaps be interesting to… … 24 THE SCIENCE OF LIGHT wave-front at a plane mirror. Let 0, Fig. 8, be theluminous point from which the spherical wave is diverg-ing, and let the dotted part of the circle represent insection the position which the wave would have occupiedat a certain instant if the mirror AB had not beenpresent.…
Light
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