December 5

Wave interference activity: Constructive and Destructive

Description: This video showed one of the wave interferences—Destructive. Which is one end flick the slinky down, and the other end will flick the slinky up at the same time. This experiment demonstrates  when one crest met a trough, they will cancel each other out in the middle, and then keep moving to the end with the same amplitude.

Description: In constructive interference, when one crest met another crest (or one trough met another trough), the amplitude of crest would doubled, and then back to the original amplitude and move to the end of string.