Friday, March 19, 2010

Friday Fun: Five Gross and Goofy Body Facts

  • You can blink up to five times a second. But most of the time, you flit your eyelids thirty to sixty times a minute. That adds up to more than ten thousand times a day and more than ten million times a year.
  • You don’t blink while you’re asleep, so dust, sweat, oil, and tears don’t get flicked out of your eyes. They pile up in the corners and mix together to form eye gunk.
  • Like the water slowly dripping out of a leaky faucet, your tear glands are constantly cranking out a fresh supply of tears. Most days, about 1/3 of a teaspoon (1.7 milliliters) of the watery liquid enters each eye. Some of it evaporates. The rest drains into tear ducts, tiny tubes that run between your eyes and nose.
  • Kim Goodman of Chicago, Illinois, can pop her eyeballs almost half an inch (11 millimeters) beyond her eye sockets. Her eyes were measured on the set of the TV show “Guinness World Records: Primetime” on June 13, 1998.
  • Close your eyes and gently rub your eyelids. See those flashes of light? The pressure of your fingertips tricks the light-sensing cells in your eyes. They send messages to your brain that make you see yellowish spots, stars, and circles.
Looking for more Gross & Goofy Body facts? Check out my new book The Eyes Have It: The Secrets of Eyes and Seeing. To find out more about the whole Grosss and Goofy Body series, read this very thorough review from School Library Journal.

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