Scientific American Volume 35 Number 03 (July 1876) . Another way of studying these resultant vibrations is bythe aid of Tisleys pendulum, which consists of a markingpoint «o arranged as to obey the motion of two pendulumsswinging at right angles to each other. A variety of effectsis produced by lengthening and shortening the pendulumsand by varying the intensities of their motion. The resultis a series of beautiful symmetrical curves represented inthe accomi)anying engravings. Fig. 4 represents unison. Fig. where the vibrating pendulums are of equal length. represents the octave, wh
Scientific American Volume 35 Number 03 (July 1876) . Another way of studying these resultant vibrations is bythe aid of Tisleys pendulum, which consists of a markingpoint «o arranged as to obey the motion of two pendulumsswinging at right angles to each other. A variety of effectsis produced by lengthening and shortening the pendulumsand by varying the intensities of their motion. The resultis a series of beautiful symmetrical curves represented inthe accomi)anying engravings. Fig. 4 represents unison. Fig. where the vibrating pendulums are of equal length. represents the octave, where one pendulum is twice thelength of the other. Fig. 6 is the f oiirth, the ratio beingthree to four; and Fig. 7 is the fifth, having the ratio of 2 to By means of these and various other apparatus too nume-rous to describe, even a deaf person could thoroughly studymusieal vibrations. They enable us to hear, as it were, withour eyes. c. F. K Electricity rh a Transniltter of Poiver. It is well known that the Gramme magneto-electric ma-chine, which transforms mechanical force into electricity,can also i>e employedin inverse manner to transform electric-ity into mechanical forc-e. The property may be utilized totransmit power over long distances. The motor of a factory,for example, could be connected with one machine so as torotate the same and thus generate a current. This current,carried over distances by cables, might be communicated toanother Gramme machine at the point where the power isrequired.
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectiron, bookyear1876
