. A text book of physics, for the use of students of science and engineering . experience to recognisethe source from which the note comes. In Fig. 617 (a) two separate simple harmonic waves are representedby displacement-time curves, one of which has twice the frequencyof the other. In Fig. 617 (b), the wave compounded of these two isgiven. It is obtained by adding the ordinates of the other twowaves. The ear is capable of recognising the two vibrations, whena wave of type (b) falls upon the ear. Compounding of vibrations.—In the preceding case, an examplehas been given of the compounding of
. A text book of physics, for the use of students of science and engineering . experience to recognisethe source from which the note comes. In Fig. 617 (a) two separate simple harmonic waves are representedby displacement-time curves, one of which has twice the frequencyof the other. In Fig. 617 (b), the wave compounded of these two isgiven. It is obtained by adding the ordinates of the other twowaves. The ear is capable of recognising the two vibrations, whena wave of type (b) falls upon the ear. Compounding of vibrations.—In the preceding case, an examplehas been given of the compounding of two vibrations, but thesehave been supposed to take place in the same direction. Theresulting vibration is therefore complex, but is still in the directionof its components. When a body has two simple harmonic motionsat right angles to each other, they may be compounded and theresultant motion obtained by means of a simple construction. Let one of the vibrations take place in the direction AB and theother in BC (Fig. 618), the frequencies being equal. If the 2u. Fig. 617.—Combination of two waves. 6?4 SOUND crap. vibrations are in the. same phase (p.
Size: 1804px × 1384px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectphysics
