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Optical illusion - Wikipedia
File:Optical illusion disc with two men throwing and catching cakes and stars.gif - Wikipedia
Moon illusion - Wikipedia
File:Motion illusion in star arrangement.png - Wikipedia
File:Optical illusion disc with birds, butterflies, and a man jumping-Corrected.gif - Wikipedia
Optical Illusion Definition & Types - Lesson
Why does the Moon look bigger than the Sun? - Quora
Optical illusion examples
Optical illusion - Wikimedia Commons