Nov. 8, 1895: Roentgen Stumbles Upon X-Rays

1895: German physicist Wilhelm Roentgen is working in his laboratory in Würzburg when he accidentally discovers the X-ray.
Roentgen was conducting experiments with a Crookes tube — basically a glass gas bulb that gives off fluorescent light when a high-voltage current is passed through it — when he noticed that the beam cast a greenish fluorescent [...]

Source: http://www.wired.com/thisdayintech/2010/11/1108roentgen-stumbles-x-ray/

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