occurs in the science of sound,when two sounds or atmospheric waves meet and destroy one another,producing silence. (See Part I., Art 3S1.) 201. Two waves do not interfere if they mee after they havetravelled through parts of equal lengths, or through paths thatdiffer in length by 1, 2, 3, 4, 5,… … 80 PHENOMENON OF INTERFERENCE. inequality in the lengths of the paths of the two waves is 5, II,2i, 85, 45, &c., waves. 203. Some idea of the mode in which the wave lengths of lighthave been determined mqy be gathered from the following experi-ment. Through a pin-hole, s, Fig. 21, pjg 31.in the…
Physics
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