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Unformatted text preview: 3/1/11 Standing wave Astro 109 Lecture 13: Waves Mar. 1 Wikipedia, "standing wave" Mar. 1 Discussion QuesKon If we want to go from this waveform: to this one: how should we shake the spring? A. B. C. D. E.
Mar. 1 Standing waves on a string "nodes" same speed, but harder twice as fast half as fast four Kmes as fast as fast Mar. 1 Wikipedia, "standing wave" Discussion QuesKon What happens when I use my fingers to hold down the violin string? A. B. C. D. E. The wavelength and pitch both go down. The wavelength and pitch both go up. The wavelength goes down and the pitch goes up. The wavelength goes up and the pitch goes down. Nothing changes. Notes on a string instrument Mar. 1 Mar. 1 1 3/1/11 "Harmonics" on a string instrument Waveform on the singing rod Mar. 1 Mar. 1 Discussion QuesKons Which waveform will I get if I hold the rod of the way from the end? A. Discussion QuesKon When I add water to the wine glass, how will the pitch change? A. The pitch will rise. B. The pitch will fall. C. The pitch will stay the same. B. C. D. E. Mar. 1 Mar. 1 Standing waves on a drum Recap propagaKng waves, standing waves waves and sound resonance Wikipedia, "standing wave" Mar. 1 Mar. 1 2 ...
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- Spring '08