Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 582
red note. 510. Lissajouss Optical Tuning. — The relation betweenthe frequencies of two forks may be very conveniently stud-ied by a method devised by Lissajous. Let (Fig. 386) represent a fork bearing a small mirrrorat the extremity of one prong vibrating vertically, and let31 be a similar fork… … Fig. aSG of the impression on the retina, will appear drawn out intoa vertical line. Likewise, if 31 were set vibrating alone, thespot would trace a horizontal line. If both forks are set inov- 572 SOXOROrS BODIES. ing at the same time, their vibrations will be compounded andwill produce the…
Physics
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