Lissajous Figures created with a two tuning forks with mirrors
3A80.40 • B+10+37
Two tuning forks are arranged at 90 degrees to each other. Each tuning fork has a mirror on one tyne. A laser beam reflects off the mirror on tuning fork A and then reflects off the mirror on tuning fork B. A rubber mallet is used to strike the tuning forks, and the resulting laser beam forms a lissajous pattern on the screen. The type of Lissajous pattern depends on the frequency of each of the two tuning forks.
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