| OLOF EDLUND Antiquarian Bookseller STOCKHOLM |  |
| OLOF EDLUND Antiquarian Bookseller STOCKHOLM | |
| $ 500 |
| Fourth separate edition. Offprint from the Sitzungsberichte der Würzburger Physik.-medic. Gesellschaft, no. 9, 1895. "While preforming experiments with a Crookes vacuum tube, a type of cathode-ray tube, Röntgen observed that some agent produced in the tube was causing barium platinocyanide crystals to fluoresce. Upon investigation he found that the fluorescence was caused by unknown rays (which he named "x-rays") originating from the spot where cathode rays hit the glass wall of the vacuum tube. He described the rays' photographic properties and their amazing ability to penetrate all substances, even living flesh. Although he was unable to determine the true physical nature of the rays, Röntgen was certain that he had discovered something entirely new, a belief soon confirmed by the work of other scientists such as Becquerel, Laue and the Curies. For his discovery, Röntgen was awared the Nobel Prize in physics for 1901"(Norman 1841). |
| * Waller 8081. Cf. Garrison & Morton 2683. Norman 184. Ekelöf 1632. DSB 11, pp. 529-531. PMM 380. Dibner 162. Sparrow 171. |