image credit: Andrew Davidhazy; image source; larger image
Hyperphysics: Standing Waves
The photo, by Andrew Davidhazy from the Rochester Institute of Technology, shows a vibrating string with a weight hanging from the lower end. For more details, see String Vibrations. To learn about standing waves on strings and in air, visit Hyperphysics: Standing Waves.
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Wave on a String
Once you have clicked on the "simulation" link below, be sure to read the Java Security Advisory before running the simulation: To do that, click the "Read now" button on the yellow band near the top of the PhET page.
In the PhET applet, Wave on a String, you can drag the end of the string up and down to simulate wave motion. To learn more, visit Physic 2000's Standing Waves and Resonance.
(This feature was updated on May 5, 2013.)