Journal of the Society of Motion Picture and Television Engineers ( Volume: 58, Issue: 2, February 1952)

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High-Constant-Speed Rotating Mirror

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Volume: 58, No. 2, pp. 159–168
Abstract: The rotating mirror is magnetically suspended in a high vacuum and spun by a rotating magnetic field. The mirror is accelerated to full speed in a way similar to that of the armature in an induction motor, but at running speed it performs as an armature of a synchronous motor. The frequency of the rotating field is determined by a piezoelectrically controlled circuit. Also it is free of hunting. The maximum rotational speed of the mirror is determined only by the strength of the mirror. Mirrors are described which rotate at 20,000 rps.
Publication Date: 1952-02-01
DOI: 10.5594/J09460
ISSN: Print: 0898-042X
Link: https://doi.org/10.5594/J09460
Author(s): J. W. BeamsRouss Physical Laboratory, University of Virginia, Charlottesville, Va.
E. C. SmithRouss Physical Laboratory, University of Virginia, Charlottesville, Va.
J. M. WatkinsRouss Physical Laboratory, University of Virginia, Charlottesville, Va.
Copyright: © 1952 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Beams J. W. , “Spectral phenomena in spark discharges,” Phys. Rev. , 35 : 24 – 33 , Jan. 1930 ; “The propagation of luminosity in discharge tubes,” ibid. , 36: 997–1001, Sept. 1930; “High rotational speeds,” J. Applied Phys. , 8: 795–806, Dec. 1937. EXTERNAL
2. Miller C. D. , “The optical system of the NACA 400,000-frame-per-second motion picture camera,” U.S. NACA ARC No. E6C25 , 1946 ; U.S. NACA TN No. 1405 , Aug. 1947. EXTERNAL
3. Holmes F. T. Beams J. W. , “Frictional torque of an axial magnetic suspension,” (letter to the Editor) , Nature , 140 : 30 – 31 , July 1937 . EXTERNAL
4. Holmes F. T. , “Axial magnetic suspensions,” Rev. Sci. Instruments , 8 : 444 – 447 , Nov. 1937 . EXTERNAL
5. MacHattie L. E. , “Production of high rotational speed,” Rev. Sci. Instruments , 12 : 429 – 435 , Sept. 1941 . EXTERNAL
6. Beams J. W. Young J. L. Moore J. W. , “The production of high centrifugal fields,” J. Applied Phys. , 17 : 886 – 890 , Nov. 1946 . EXTERNAL
7. Beams J. W. , “High centrifugal fields,” J. Wash. Acad. Sci. , 37 : 221 – 244 , July 1947 . EXTERNAL
8. Elmore W. C. , “Electronics for the nuclear physicist—IV,” Nucleonics , 2 : 50 – 58 , May 1948 . EXTERNAL

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J. W. Beams, E. C. Smith, and J. M. Watkins; High-Constant-Speed Rotating Mirror, Journal of the Society of Motion Picture and Television Engineers ( Volume: 58, Issue: 2, February 1952); SMPTE, 1952. Available at https://doi.org/10.5594/J09460

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J. W. Beams, E. C. Smith, and J. M. Watkins; High-Constant-Speed Rotating Mirror, Journal of the Society of Motion Picture and Television Engineers ( Volume: 58, Issue: 2, February 1952); SMPTE, 1952. Available at https://doi.org/10.5594/J09460

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<span class="citation">J. W. Beams, E. C. Smith, and J. M. Watkins; <cite>High-Constant-Speed Rotating Mirror</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 58, Issue: 2, February 1952); SMPTE, 1952. Available at <a href="https://doi.org/10.5594/J09460" target="_blank" rel="noopener">https://doi.org/10.5594/J09460</a></span>

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J. W. Beams, E. C. Smith, and J. M. Watkins; <cite id="bib-10-5594-j09460">High-Constant-Speed Rotating Mirror</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 58, Issue: 2, February 1952); SMPTE, 1952
<span class="doi">10.5594/J09460</span>
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