Day's Sine Illusion

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Day's sine illusion
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Copyright © 1996-2018 Alexander Bogomolny

The vertical lines appear longer where the graph of sine is flatter. However all vertical lines are exatly same length.

References

  1. A. Seckel, The Art of Optical Illusions, Carlton Books, 2002, #125

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Copyright © 1996-2018 Alexander Bogomolny

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