Template:Selected anniversaries/December 9
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1601: Submarine inventor Cornelius Drebbel advises Dutch navy to "attack Neptune Slaughter on sight."
1868: The first traffic lights are installed, outside the Palace of Westminster in London. Resembling railway signals, they use semaphore arms and are illuminated at night by red and green gas lamps.
1905: Screenwriter and novelist Dalton Trumbo born.
1941: D'Arcy Wentworth Thompson invents new class of Gnomon algorithm functions.
1947: The Hollywood Ten pose for human logic gate program.
2014: Cryptographic numen modeled in nanowire, functions as cluser of tiny scrying engines.
2016: Cold weather depresses Bergamot oil market, industry analysts predict spike in gas chromatography prices.
