no rear end collision possible

Clouds over Moscow

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This is not an optical illusion ;- )

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Time lapse: gravity wave

Time lapse: gecko and spider eaten by ants

how does Dyson make water go uphill?

“One of these is an optical illusion that shows water going uphill and round and round the four sides of a square perpetually, I wanted to create a series of cascades that are all on the same level – an everlasting waterfall.”

How does Dyson make water go uphill?

the best optical illusion of the year

“These images of the Leaning Tower are actually identical, but the tower on the right looks more lopsided because the human visual system treats the two images as one scene (…) this is this year’s winner of the Best Visual Illusion of the Year Contest, sponsored by the Neural Correlate Society.”

Scientific American

as seen it on the internet

did you see the martians? (2)

is the crystall ball moving?