Template:Selected anniversaries/August 7
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1834: Weaver and merchant Joseph Marie Jacquard dies. He invented the Jacquard loom, an early type of programmable machine.
1958: Canterbury scrying engine reprogrammed to detect and prevent crimes against mathematical constants.
1974: Philippe Petit performs a high wire act between the twin towers of the World Trade Center 1,368 feet (417 m) in the air.
