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  • 1955-1959  (3)
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 1423-1427 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE idea of making a microscope for X-rays goes back to the earliest days of the subject. In the original announcement of his discovery, R ntgen1 describes an attempt to focus the new radiation and concludes from its lack of success: "das man mit Linsen die X-strahlen nicht konzentrieren kann, ist ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 1172-1173 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have built and operated successfully a flying-spot X-ray microscope of the emission type. Magnetic lenses have been used, so as to obtain a smaller electron spot or alternatively a greater beam current in a spot of the same size, as compared with electrostatic lenses. By employing a proportional ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Flow, turbulence and combustion 7 (1958), S. 338-343 
    ISSN: 1573-1987
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary In comparing the speeds of the various microradiographic methods, it has been usual to take as basis the exposure time needed for recording the X-ray image. It is more realistic to include the time required to make available the information stored in the negative, by producing an image magnified up to the resolution of the eye. From this point of view the projection method is much faster than the times-two method or contact microradiography, for a given field of view, i.e., they stand in reverse order to that of their initial exposure times. In given camera length, on the other hand, the initial exposure is the same for both projection and contact, and is much longer for the times-two method. But the overall time for production of the final image is now much the same for all three methods. As regards resolution, the projection method offers the best ultimate performance.
    Type of Medium: Electronic Resource
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