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Hace 3 días · On 8th November, 1895 William Röntgen made a discovery that would revolutionise physics and medicine. At the time, ... Röntgen was working as a professor of physics at the University of Würzburg, where he was conducting experiments with Crookes tubes, a type of vacuum tube used to study cathode rays. On November 8, ...
Hace 4 días · Wilhelm Röntgen’s Discovery of X-Rays. In 1894, the German physicist Wilhelm Röntgen (also spelled Roentgen) began a serious investigation into cathode rays and the fluorescence caused by these rays using a Crookes tube.
Hace 2 días · For instance, the “wireless being” described by computer scientist Nicholas Negroponte in 2002 in response to the expansion of Wi-Fi (Negroponte, 2002) echoed and updated the “new and astonishing world” of wireless technologies described by William Crookes as early as 1892 (Crookes, 1892 p. 174).
Hace 17 horas · Sir William Crookes, Engelse natuurkundige en scheikundige (foto hierboven) Crookes ging er terecht van uit dat ’tussen deze twee proefpersonen en de fysieke veranderingen in hun geest een overeenkomstige opeenvolging van fysieke oorzaken moet bestaan die deze reactie mogelijk maken’.
Hace 4 días · Helena Petrovna Blavatsky (née Hahn von Rottenstern; 12 August [O.S. 31 July] 1831 – 8 May 1891), often known as Madame Blavatsky, was a Russian and American mystic and author who co-founded the Theosophical Society in 1875. She gained an international following as the leading theoretician of Theosophy.. Born into an aristocratic family in Yekaterinoslav, then in the Russian Empire (now ...
Hace 17 horas · Kathodenstrahlen sind Elektronenströme, die von der Kathode (negative Elektrode) in einer Vakuumröhre emittiert werden. Sie wurden erstmals im 19. Jahrhundert von Sir William Crookes bei Experimenten mit Kathodenstrahlröhren entdeckt. Aufladung: Kathodenstrahlen sind negativ geladene Teilchen, insbesondere Elektronen.
Hace 3 días · On February 22, 1890, Dr Arthur Goodspeed and William Jennings made the first x-ray photograph, in the physical lecture room of the University of Pennsylvania. On that evening, Goodspeed and Jennings had been making brush electrographs of coins and brass weights. After they finished their experiments, Jennings stacked all of the photographic plates; two coins–either… Lire la suite Goodspeed
