Collier's New Encyclopedia

A complete general encyclopedia of 1921 — the world as it was understood just after the Great War, from Aachen to Zwingli, across twelve volumes and six thousand pages.

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Roentgen (WILLIAM CONRAD VON a German)

WILLIAM CONRAD, VON, a German scientist; born in Prus- WILLIAM CONRAD VON ROENTGEN sia in 1845; was graduated in medicine at the University of Zurich in 1869, and ROENTGEN accompanied Professor Kundt, his teacher, to Würzburg, where he engaged in practice. He went to Strasburg, in 1873, as assistant professor, and for 20 years was conspicuous as Professor of Mathematics and Physics, and also as a scientist. In November, 1895, Roentgen made the discovery of what has since been known as the Roentgen, or X-rays. The German emperor bestowed the Order of the Royal Crown on the discoverer, who afterward also was ennobled. He received the Nobel Prize for physics in 1901.

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