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TIL that “pixel” was originally short for the term “picture element”.

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gMxKb TIL gamma rays are used to disinfect food
Brr4x TIL that the sky beam of the Luxor Hotel and Casino in Las Vegas is the strongest beam of light in the world. On a clear night, the beam can be seen by aircraft up to 275 miles (443 km) away.
lrd5 TIL that Mark Davis, owner of the Oakland Raiders NFL team, is worth $500 million but drives a 1997 minivan and carries a 2003 dumbphone. Until recently he ate at Hooters every Tuesday night for $12.99 all-you-can-eat wings. Davis travels to southern California to get his unusual bowl haircut.
R7KWw TIL: Arthur Venditti, an in-house designer for the Parker Brothers, was a fan of drag racing and recalled that the trucks that pushed the dragsters to the starting line had bumpers called “nerf bars”. Thus, leading to the famous NERF name.
OGNaa TIL that "Blackboard Bold" (the style of writing used to represent number sets in maths, e.g. ℕ, ℚ, ℝ, or ℤ) only first emerged in the 1950s due to people "double striking" letters on a typewriter to make them bold. It subsequently got into maths in the 70s and onward.