Barton, Edwin H. (Edwin Henry), b. 1858 · London, Macmillan and Co., limited · leaf 268
178, 179 VIBKATING SYSTEMS 249 on turning this wire by the handle provided, its projectionrepresents a progressive wave moving, say, in the positivedirection. At the same time, a second wire in the form of aleft-hand screw gives a projection representing a negativelyprogressing wave. The third wire… … Fig. 50.—Projection Model for Stationary Vibrations. sented by this third wire is that which is formed by com-pounding the progressive waves represented by the othertwo. Further, the brass plates at the ends are movable, andmay be so adjusted that each end represents an open end,or so that one end…
Sound
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