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TIL the prescription for infants' eyeglasses is identified using a technique called Retinoscopy

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5xQ8 TIL Charles VI of France suffered from such debilitating mental illness that he forgot his own name, his children, his wife and his identity as king. He periodically believed that he was made of glass and tried to prevent himself from breaking.
woYyM TIL Terry Jones said of fellow Monty Python member Graham Chapman's death on the eve of the group's 20th anniversary, it was "the worst case of party-pooping in all history."
l7ovK TIL You must notify the EPA of a burial at sea in US territorial waters within 30 days following the burial, and you can only be buried in waters 3 nautical miles from shore in waters at least 600 feet deep without a special permit.
E1E4w TIL Teddy Roosevelt regularly staged boxing matches in the White House, taking on anyone he could - including professional boxers. He only stopped boxing when his eyesight was permanently damaged by a punch from his military aide, Col. Daniel T. Moore.
P1xQE TIL Checkless Chess is a variant of chess where check is illegal unless it is checkmate