Introduction: The Refraction of Light in Water

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Optical illusion (visual illusion) - error in visual perception caused by the inaccuracy or inadequacy of the processes unconscious correction of the visual image, as well as physical causes ( "flattened the Moon", "broken spoon" in a glass of water).
There is an effect of visual perception when the observer is consciously or unconsciously makes factually inaccurate explanation for the observed pattern to them.


DIY Hacks and How Tos (author)2016-09-30

This is a fun trick. I showed it to my kid using a magnifying glass and it blew his mind.

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