TIL Wilhelm Röntgen discovered X-rays in Nov, 1895. The very next month, he took the first X-ray image using his wife’s hand; 2 months after that, X-rays were being used in multiple hospitals across the globe. By May, Thomas Edison developed the first mass-produced X-ray imaging device.

Read more: https://en.wikipedia.org/wiki/X-ray#Discovery_by_R%C3%B6ntgen

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