



(36 votes)

This Optical Illusion is really neat. Stare at the black dot for 30 seconds, and you’ll see the haze start to disappear.




(21 votes)

Could anyone build this triangle out of real material? With today’s technology, probably yes :)




(21 votes)

Is this a square? Although it appears that the square’s sides bend inwards, they are actually straight lines!




(24 votes)

Which inner circle is bigger? Although it appears that the inner circle on the left is bigger, they are actually the same size!








