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cathode-ray-tube

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Journal Articles
Historical Studies in the Natural Sciences. 2018; 485648–658 doi: https://doi.org/10.1525/hsns.2018.48.5.648
Published: 01 November 2018
... increasingly turned into digital data and are studied and manipulated on the screen. Identifying an earlier dramatic shift in the representation of life processes, namely the shift of the study of life from the organism to the test tube, historian and epistemologist Hans-Jo¨rg Rheinberger posed the question...
Journal Articles
Historical Studies in the Natural Sciences. 2017; 474529–567 doi: https://doi.org/10.1525/hsns.2017.47.4.529
Published: 01 September 2017
... as the collimating slit (S) near the output (anti-cathode) of the x-ray tube. When the two slits were aligned and the photographic plate was moved onto the same axis, an exposure was taken (R). The plate was then moved through a known angle, which is 7 degrees in the two cases presented above, and...
Journal Articles
Historical Studies in the Natural Sciences. 2016; 461110–118 doi: https://doi.org/10.1525/hsns.2016.46.1.110
Published: 01 February 2016
... Office. Agar underlines the extent to which scientists in each field relied on work with artificial states to build arguments about the natural, drawing an analogy between the relations among the hypnotized body and the complex human body, and the light bulb or cathode ray tube and the physical universe...
Journal Articles
Historical Studies in the Natural Sciences. 2016; 463313–359 doi: https://doi.org/10.1525/hsns.2016.46.3.313
Published: 01 June 2016
... onward, another charged particle played a heuristic role for further research in optics. This particle s properties (charge-to-mass ratio, e/m) had been recently measured in three different experimental contexts: cathode rays,44 the Zeeman effect,45 and the Faraday effect.46 Scientists previously assumed...
Journal Articles
Historical Studies in the Natural Sciences. 2013; 433243–280 doi: https://doi.org/10.1525/hsns.2013.43.3.243
Published: 01 June 2013
... developed in the labs. Flat panel displays would be lighter and easier to move than cathode ray tubes and they had aesthetic appeal as well. For the history of LCD technology at RCA see Benjamin Gross, Crystallizing Innovation: The Emergence of the LCD at RCA, 1951 1976 (PhD dissertation, Princeton...
Journal Articles
Historical Studies in the Natural Sciences. 2012; 423190–234 doi: https://doi.org/10.1525/hsns.2012.42.3.190
Published: 01 June 2012
... automatic ionospheric recorder cathode-ray tube critical frequency ionosphere magneto-ionic theory radio waves scan-frequency recorder sounder 190 | *Institute for the History and Philosophy of Science and Technology, University of Toronto, 91 Charles Street West, Toronto, Ontario, M5S 1K7, Canada...
Journal Articles
Historical Studies in the Natural Sciences. 2012; 424255–282 doi: https://doi.org/10.1525/hsns.2012.42.4.255
Published: 01 September 2012
... lined up and showed that radar data could indeed be received from a phone line, manipulated by a digital computer, and then displayed on a cathode-ray tube. Valley felt this was proof of prin- ciple, just sufficient for ADSEC s purpose, which was to tell the Air Force what to do, not to actually...
Journal Articles
Historical Studies in the Natural Sciences. 2011; 413303–343 doi: https://doi.org/10.1525/hsns.2011.41.3.303
Published: 01 August 2011
... by the training of some of its members in European research centers, followed by research activity on x-ray spectrography, radioactivity, and nuclear physics at home. This project was supported by grants awarded by the Board for National Education created in 1929, and then the Institute for High...
Journal Articles
Historical Studies in the Natural Sciences. 2010; 4011–47 doi: https://doi.org/10.1525/hsns.2010.40.1.1
Published: 01 February 2010
... privately circulated papers, Why Do Our Ideas about the Ocean Circulation Have Such a Peculiarly Dream-Like Quality? 23 In many respects, 22. See Ray Montgomery to Stommel, 23 Mar 1950, RBM, Box 263; Munk to Stommel, 18 Apr 1950, WHM, Box 19; and Iselin to Stommel, 30 Apr 1950, HMS, Box 2, Folder 3. Other...
Journal Articles
Historical Studies in the Natural Sciences. 2009; 394377–417 doi: https://doi.org/10.1525/hsns.2009.39.4.377
Published: 01 November 2009
... Stark, who dur- ing World War I conducted experiments with positive rays from discharge tubes filled with nitrogen at low pressure and in this way discovered a doublet line near = 5563 Å.35 This was a result rather far from the accepted value of the au- roral line, but Stark argued that all previous...
Journal Articles
Historical Studies in the Natural Sciences. 2008; 383405–450 doi: https://doi.org/10.1525/hsns.2008.38.3.405
Published: 01 August 2008
... and therefore to electronic function. The symbol for the vacuum tube, for instance, stylized the elements of the device cathode, anode, grid, envelope and then analogized them to a valve, restricting or permitting the flow of electricity through portions of the circuit. Virtually every icon used in...
Journal Articles
Historical Studies in the Natural Sciences. 2007; 37suppl73–120 doi: https://doi.org/10.1525/hsps.2007.37.s.73
Published: 01 March 2007
... tube. After exiting through the cathode s canal into the vacuum chamber, a beam of canal rays would radiate over a short distance until it had released all its energy. Once the beam had left the high pressures of the discharge chamber, the canal ray source was considered to be well suited for studying...
Journal Articles
Historical Studies in the Natural Sciences. 2007; 372205–246 doi: https://doi.org/10.1525/hsps.2007.37.2.205
Published: 01 March 2007
... ionized. This kind of phenomenon led J.J. Thomson, before Einstein proposed the LQH, to suggest a particulate theory. His particles were not tiny spheres or parallelepipeds as in Newton s theory but tubes of electric force as conceived by Michael Faraday. He did not reject Maxwell s electromagnetic wave...
Journal Articles
Historical Studies in the Natural Sciences. 2005; 36193–130 doi: https://doi.org/10.1525/hsps.2005.36.1.93
Published: 01 September 2005
... theory for interpretating experiments on the distribution of Röntgen rays produced by the impact of the cathode particles directly against the walls of the discharge tube. A long mathematical development showed that the radiation emit- ted by the sudden stoppage of a charged particle had the same...
Journal Articles
Historical Studies in the Natural Sciences. 2006; 362243–273 doi: https://doi.org/10.1525/hsps.2006.36.2.243
Published: 01 March 2006
... glass (pyrex) tubes gave trouble in Berkeley s 27-inch cyclotron [Heilbron and Seidel (ref. 29), 292]. 38. Lawrence and Livingston, Multiple acceleration (ref. 28), 609. 39. Nishina to Lawrence, 21 Feb 1938 (EOL, 9:38). FIG 3 Front view of Nishina s 26-inch cyclotron. Notice two rabbits in glass boxes...
Journal Articles
Historical Studies in the Natural Sciences. 2005; 36135–70 doi: https://doi.org/10.1525/hsps.2005.36.1.35
Published: 01 September 2005
... from disparate backgrounds while maintaining his contacts with émigré scientists from continental Europe. During World War II he was classifi ed as an Enemy Alien and excluded from war work at BTH, which included development of the magnetron tube used for radar. He worked in a hut outside the security...
Journal Articles
Historical Studies in the Natural Sciences. 2004; 351115–152 doi: https://doi.org/10.1525/hsps.2004.35.1.115
Published: 01 September 2004
... his description in the tradition of cathode-ray experiments. To prevent corona discharges and discharges through the coil s insulation, he proposed to place the coil s secondary winding, or alternatively, the whole coil, within the highly evacuated discharge tube. The ac- celerated particles should be...
Journal Articles
Historical Studies in the Natural Sciences. 2004; 35167–93 doi: https://doi.org/10.1525/hsps.2004.35.1.67
Published: 01 September 2004
... electromagnetic origin for the electron s (and other particles ) mass can be seen from the text of the lectures he delivered on Maxwell sche Th. U. Elektronenth. in 1906/07 and 1908/09. He wrote there (p. 2): Cathode Rays. Microatoms. Their mass is alterable; an electromagnetic action. The mechanics of the...
Journal Articles
Historical Studies in the Natural Sciences. 2000; 311125–173 doi: https://doi.org/10.2307/27757848
Published: 01 January 2000
... corpuscolare delle radiazioni elettriche," NC, 18 (1909), 197-199 Max Abraham, "Considerazioni critiche sulle radiazioni elettriche," NC, 18 (1908), 200. NC, 18 (1909), on 127. 26 Bruno Carazza and Helge Kragh, "Augusto Righi's magnetic rays: A failed research program in early 20th-century physics...
Journal Articles
Historical Studies in the Natural Sciences. 1998; 282337–351 doi: https://doi.org/10.2307/27757798
Published: 01 January 1998
... electromagnetism and vacuum-tube technology that were available before the competing theories existed. Here the metaphor of a "pidgin" being "worked out" fails. To summarize, Galison's subcultures and trading zones are meant to be metaphors with a loose fit to their anthropological sources. Their applications to...