In these video, I demonstrate how constructive and destructive interference works with waves. I use water as the medium of the waves to travel. In the first video, I show how waves look without interference. In the second video, I show wave interference in water and show how it affects the waves. In the video, you can see that the waves continue to move through each other, but in certain locations, the amplitude of the waves increase because of constructive interference. Constructive interference is defined as when two waves meet and create a greater amplitude equal to the sum of their amplitudes. In the video, there are also points of destructive interference even though they are harder to see. Destructive interference is when two waves meet and create a smaller amplitude equal to the sum of the two waves. Destructive interference happens because when the two waves meet, one will be at a position that is less than equilibrium and the other will be at a point greater than equilibrium. Equilibrium is the point where the water would be if there were no waves. If the two positions are opposite, destructive interference can cause the two waves to completely cancel each other out and leave the water stuck at equilibrium. In this example, there is both destructive and constructive interference.
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AuthorPhysics student at Flint HIll Archives
April 2019
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