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Waves Oscillations - Harvard University

Chapter 1 OscillationsDavid Morin, wave is a correlated collection of Oscillations . For example, in a transverse wave travelingalong a string, each point in the string oscillates back and forth in the transverse direc-tion (not along the direction of the string). In sound Waves , each air molecule oscillatesback and forth in the longitudinal direction (the direction in which the sound is traveling).The molecules don t have anynetmotion in the direction of the sound propagation. Inwater Waves , each water molecule also undergoes oscillatory motion , and again, there is nooverall net needless to say, an understanding of Oscillations is required for anunderstanding of outline of this chapter is as follows. In Section we discuss simple harmonicmotion, that is, motioned governed by aHooke s lawforce, where the restoring force isproportional to the (negative of the) displacement.

overall net motion.1 So needless to say, an understanding of oscillations is required for an understanding of waves. The outline of this chapter is as follows. In Section 1.1 we discuss simple harmonic motion, that is, motioned governed by a Hooke’s law force, where the restoring force is proportional to the (negative of the) displacement.

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