(KGTV) - Does a video really show an arrow that always points right, even when it's spun 180 degrees?
Yes.
The illusion was created by a mathematician.
It uses a combination of reflection, perspective, and viewing angle.
Does a video really show an arrow that always points right, even when it's spun 180 degrees?
Posted at 12:09 PM, Jun 18, 2018
and last updated 2018-06-18 15:09:37-04
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