Stationary Waves
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Introduction A transverse stationary wave on a string can be treated as being formed by the superposition of an incident wave and the reflected wave from a fixed end or a free end.

When a stationary wave is formed, click on the string and observe the motions of any two particles A and B. Apply different changes to the wave and see what happens.
s-t graph of point A:
displacement
time
t = T
t = 2T
s-t graph of point B:
displacement
time
t = T
t = 2T
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在繩子上按下任意兩點，顯示點選位置的 s-t 線圖
incident wave
reflected wave
frequency f：
amplitude：
A
B