For
centuries, sailors on the high seas supposedly saw everything from
ghost ships, sea monsters, mermaids and even sirens: dangerous femmes
fatales who lured sailors to their death.
But some of these tall tales can be explained by the physics of light, temperature and the way our brains process vision.
"Fata morgana" is a rare and complex form of mirage seen on land and at sea.
Unlike the more familiar water-in-the-desert "inferior mirage," a "fata morgana" is a form of "superior mirage."
It can make objects like ships and even cities appear to be floating in the air.
According
to a recent Wired.com article, the optical illusion is created when
cold denser air at the surface bends light reflected from a distant
object downward.
But, our brains still see the object as if its reflected light came in a straight path.
So the object appears higher than it actually is, often floating in mid-air.
The legend of the flying dutchman could’ve begun when sailors witnessed a "fata morgana."
MORE: Ghostly Shipwrecks from Around the World
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