Joanna Carver, reporter
A head-scratching illusion comes in at number 10 in our best videos of 2012 countdown.
Try to wrap your head around this illusion featuring a roof that appears to defy gravity by attracting balls to its peak. Once the house is rotated to uncover the secret, you'll be surprised to see how dramatically your brain was tricked.
According to Kokichi Sugihara from Meiji University in Kawasaki, Japan, who created the mind-bending house, the illusion is interesting because our brain is fooled even after we've seen the reveal. When trying to make sense of a figure, we're primed to perceive rectangular configurations time and time again.
To find out more, read our original article: "Friday Illusion: Impossible roof defies gravity". For more mind-boggling videos, check out an impossible wedding car or watch a 3D shape that conceals six different tricks.
Best videos of 2012: Gravity-defying roof illusion
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Best videos of 2012: Gravity-defying roof illusion
