Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
as the square root of the density. Hence, dense cords render graver notes than those of less density.Large, dense, and long cords, not tensely stretched, give grave notes;while small, light, and short cords, tensely stretched, yield acute notes. 67S. Figure 19.—Verification of the laws of… … are mounted two fixed bridges, F and E, and one movable bridge H.Passing over the fixed bridges are two cords, ff and II. One end ofeach cord is fastened to the box, and the other ends, after passing overpulleys, are drawn down with equal force, by means of equal weights,W, as shown. On the edge of…
Physics · Astronomy
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