Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 90
explanation. ELEMENTS OF ACOUSTICS. 81 • The angle JV7 A D, made bythe normal to the refractedpulse and that to the deviatingsurface, is called the angle ofrefraction. Denote the angleof incidence N A D, which isequal to the angle M A A,Fig. 38, by 9 ; and the angle ofrefraction N A D, which… … Illustration; MA sin 9A B sin 9 r> but A M and A B, being described in the same time, Explanation;the first by the incident, the second by the transmittedpulse, are respectively proportional to the velocities inthe two media. Denoting the velocity of the incidentpulse by J7, and that of the…
Mechanics · Acoustics · Optics
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