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Wave Formula

Wave Formula. v = f l. What determines the speed of a wave? The source The medium The energy/amplitude The frequency. Wave Speed. Doppler Effect. The apparent change in frequency due to the motion of the source (or receiver) The Doppler effect is applied to ALL waves Sound Water

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Wave Formula

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  1. Wave Formula v = f l What determines the speed of a wave? • The source • The medium • The energy/amplitude • The frequency Wave Speed

  2. Doppler Effect • The apparent change in frequency due to the motion of the source (or receiver) • The Doppler effect is applied to ALL waves • Sound • Water • Light • etc

  3. No Motion - No frequency change

  4. Motion = apparent frequency change Larger frequency Higher pitch Smaller frequency Lower pitch

  5. Point Source – Moving Draw this picture v = f l v does not change How has l changed in the direction of motion? l is smaller f is larger

  6. Point Source – Moving v = f l v does not change How has l changed opposite the direction of motion? l is bigger f is smaller

  7. Complete worksheet

  8. What happens when source moves faster that the wave?

  9. F/A-18 breaking the sound barrier Condensation cloud as an F/A-18 Hornet flys at or near the speed of sound.Photo by John Gay.

  10. B-2 Spirit Stealth Bomber. Photo by Bobbi Garcia.Posted here with permission of the AFFTC.

  11. F/A 9-Lives ……. super sonic kitty

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