X-ray
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An X-ray is a form of high-energy electromagnetic radiation with a wavelength shorter than those of ultraviolet rays and longer than those of gamma rays. Roughly, X-rays have a wavelength ranging from
Natural color X-ray photogram of a wine scene. Note the edges of hollow cylinders as compared to the solid candle.
Example of a Crookes tube, a type of discharge tube that emitted X-rays
Wilhelm Röntgen
Hand mit Ringen (Hand with Rings): print of Wilhelm Röntgen's first "medical" X-ray, of his wife's hand, taken on 22 December 1895, and presented to Ludwig Zehnder of the Physik Institut, University of Freiburg, on January 1, 1896
Wilhelm Röntgen
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Wilhelm Conrad Röntgen was a German experimental physicist who produced and detected electromagnetic radiation in a wavelength range known as X-rays. In 1901, Röntgen became the first recipient of the
X-ray
…3×1016 Hz to 3×1019 Hz) and photon energies in the range of 100 eV to 100 keV, respectively. X-rays were discovered in 1895 by the German scientist Wilhelm Conrad Röntgen, who named it X-radiation to signify an unknown type of radiation. X-rays can penetrate many solid substances such as construction materials and living…
Röntgen in 1900
The house in Remscheid-Lennep, Germany, where Röntgen was born.
Grave of Wilhelm Röntgen (and relatives) in Alter Friedhof in Giessen.
X-ray by Röntgen of Albert von Kölliker's hand.