String_Waves

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Introduction:
We are used to seeing objects moving through space, like footballs and cars and snow flurries. In this section, we will look at a different kind of motion, where things move through space, but not in the way we are used to!

Activity:

 * The simulation, [|Waves on a String], at the PhET web site, gives you an opportunity to explore wave motion. Follow the link, click Run Now, and try out the features of the simulation!
 * Now that you have learned some of the controls of the simulation, try these scenarios to make sure you understand fundamental properties of waves:
 * 1) Set the source to "Manual" and send a pulse with "damping" set at 100, 50, and 0, and compare the results.
 * 2) Set the source to "Manual" and send a pulse with the "tension" set at medium, high, and low, and compare the results.
 * 3) Set the source to "Pulse" and send a pulse for a) Fixed End, b) Loose End, and c) No End, and compare the results.
 * 4) Set the source to "Oscillate" and change the sliders labeled a) "amplitude", and b) "frequency", and compare the results.
 * 5) Set the source to "Oscillate" and turn the Rulers on. Move the vertical ruler next to any green dot on the chain, and move the horizontal ruler to the mid-line of the chain. Pause the simulation at various times and record the position of that green dot. What patterns did you discover?

Conclusion:
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