Standing+Wave

By Jane Karpowicz and team A standing wave, also known as a stationary wave, is a wave that remains in a constant position.

When two waves from two different ends of a string occur, they interfere with each other which produce a standing wave.

media type="youtube" key="ic73oZoqr70&hl=en" height="355" width="425" This video displays the motion of a standing wave. Notice the position of the nodes, and how they do not change.

media type="youtube" key="vEE6kB5RLYw&hl=en" height="355" width="425" Notice the position of the string in this video. The trough and crest switch position because the wave is not flowing, it is in a constant position.

Standing waves are produced when two waves propagate through the same medium in opposite directions in such a way that when the interfere with each other, they reinforce each other. This results in the medium “standing still” at some points while other points experience the superposition combination of the maximum amplitude of the two waves.
 * Standing Waves **