Well's natural philosophy : for the use of schools, academies and privte students, introducing the latest results of scientific discovery and research ; arranged with special reference to the practical application of physical science to the arts and the experiences of everyday life ; with three hundred and seventy-five engravings (1873)
Wells, David A · New York : Ivison, Blakeman, Taylor and Co. · leaf 199
, ^^^ * ^ ^^^ ^ f^i ^^S-1^7, represent two se- ries of sound undulations, advancing in sucha manner as to cause the elevation of one at eto correspond with the depression of the otherat /; then if both are equal in intensity, theywill neutralize each other, and an instant of si-lence will be… … Fig. 188. B the vessel will assume sonorous vibrations, and atone will be produced. If now a second glasscylinder be held in the position B, at right anglesto A, the musical tone previously heard will cease;but if either cylinder be removed, the sound willbe renewed again in the other. In this…
Physics · Science · Technology
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