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P H O T O G R A P H Y C O N T E S T Sponsored by A.J. Hirsch |
Lisa Cracknell
Honourable Mention
2006 OAPT 4C Photo Contest
Circular Wavesl
A wave is a disturbance caused by a vibration, its effect is a transfer of energy over a distance. In this photo you can see these white balls are vibrating, which are causing circular waves to go outward. It's a transverse wave, which means it consists of crests and troughs. Straight waves are caused by a vibration and the waves go outward in just one direction. The waves in this photo are circular because once the vibrations start the wave rather than going out in just one direction the waves in this photo goes outward in all directions causing them to be circular waves. Once these two waves meet each other in the middle they interfere with each other. There are two kinds of interferences in waves, constructive or destructive. In this case they are destructive because when the waves meet each other the displacement from the rest axis is reduced. If there is a reduction in the displacement then it is a destructive interference. If the displacement gets larger at the point of interference then it's constructive. You can see the waves get smaller at the point of interference.