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  • Rays and Wave Fronts

    Light, Sound and ripples on the water surface are ell examples if waves. They all transfer energy from place to place They do this without net motion of the medium through which they travel They all involve oscillations or vibrations of one sort or...

    https://astarmathsandphysics.com/ib-physics-notes/waves-and-oscillations/4730-rays-and-wave-fronts.html

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