Born on this Day in History: April 16, 1889 - Charlie Chaplin, co-founder of United Artists, was a comedic actor whose ability made him a world wide star before the end of the first world war and a major influence in the silent film era. His character of the Tramp, a refined vagrant, was identified so closely with the silent film era that Chaplin refused to make a "talkie" with him, retiring the character in the film Modern Times.
On this Day in History: April 16, 1943 - Chemist Albert Hofmann inadvertently experiences the world's first acid trip when a tiny quantity of lysergic acid diethylamide accidently seeps through the skin of his finger. After leaving work early, he went home and settled into "a not unpleasant intoxicated condition." Then he had solid two hours of visual hallucinations: "I perceived an uninterrupted stream of fantastic pictures, extraordinary shapes with intense, kaleidoscopic play of colors." It will be another three days before Hofmann gets up the courage to swallow 250 micrograms and ride his bicycle home.