Sound : an elementary text-book for schools and colleges (1913)
Capstick, John Walton, 1858- · leaf 102
lst the parts at G and D have just come into a position tobe reflected. Consequently the wave-front between G and Dwill have taken some such shape as the curve GEU ; that is tosay, the wave-front which had the form of the sphere 606 hasnow been bulged inwards between G and D, and the bulgeis… … It can be shewn that the bulges are spheres spreadingoutwards from B as centre, where £ is as far behind the wallas A is in front of it, and their velocity is the same as that ofthe original wave-fronts. 92 REFLECTION [CH. VI 116. Sound Images. These spheres form the reflectedwave-fronts; and we…
Sound
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