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TIL that in Scarface (1983) The prop firearms were equipped with electronic synchronizing devices so that they would only fire when the camera shutter was open. The result was that the guns' muzzle flashes are much more visible and consistent than in most movies

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gMaab TIL the electric chair was intended to be more humane than hanging. But the first in NY in 1890 took 8 minutes and two attempts. Comments included "they would have done better using an axe", and "an awful spectacle, far worse than hanging".
loxwG TIL that eating a live Slug could cause paralysis neck down, coma, or even death. To eat one safely, it must be adequately cooked to minimize the risk of dying from ingesting the parasites it hosts.
p8bjO TIL In 1931 misinformation and inflammatory remarks by a radio station helped provoke the Iowa Cow War, eventually leading to the governor declaring martial law and deploying the National Guard.
78WNL TIL: Until 2013, foreign chefs in Japan were legally barred from working in restaurants specializing in traditional Japanese food and could only serve foreign cuisine. Japan changed its regulations for foreign chefs after traditional Japanese cuisine won UNESCO designation.
W77lN TIL slime molds are problem solvers, scooting around on pseudopods before ballooning to release their spores. They can find the shortest path through a maze, and they inspired a slime-mold algorithm that researchers used to map filaments of dark matter connecting galaxies in the universe.