› added 4 years ago

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TIL that Dr. Phil lost his license to practice psychology in 2006

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86dX TIL that if humans had eagles’ eyes, we could see an ant on the ground from the roof of a 10-story building. You would also have brilliant color vision, UV vision, and an almost 360 degree range of view.
OoGOX The sky appears blue for a combination of two reasons. Before white light reaches the Earth's surface, the light waves collide with and bounce off of the nitrogen and oxygen atoms in the atmosphere. Different frequencies of light (in other words different colours) are scattered differently. Higher frequencies (blue and purple) are more easily scattered and thus bounce around in all different directions more than lower frequencies (red or orange) do. The scattering of high frequencies alone would cause the sky to appear blue and purple, but our eyes work better at frequencies near the middle of the spectrum (yellow and green). Since the colour blue is closer to yellow or green than purple is, the sky we see appears blue.
BZ9x TIL Giving blowjobs can leave a diagnostic bruise that doctors or dentists can see. (x/post AskReddit)
XErbD TIL that the entire internet is kept locked up with 7 physical keys that open safety deposit boxes spread across the world to prevent people hacking the control mechanisms for web address assignment
e06WD TIL in 1715, a Spanish treasure fleet loaded with gold and silver was sunk by a hurricane off the coast of Florida. Divers over time have found coins scattered near the wreck, with a 2015 dive netting $4.5 million.