The Beatles jump up the charts, Howard Hughes exposes his fake biographer, "The Phantom of the Opera" passes "Cats," and Apple introduces iTunes and the iPhone, years apart, all on this day.
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Public domain
1839: The French Academy of Sciences announces the daguerreotype photography process. The first commercially successful photographic process, daguerreotype was invented by Louis-Jacques-Mandé Daguerre and involved coating copper plates with iodized silver to create a mirror image.