Letter | Published:

High-Speed Counting with the Flying Spot Microscope

Naturevolume 169page963 (1952) | Download Citation



IN the flying spot microscope the specimen is scanned by a single spot and the resulting pictures displayed on a television monitor tube1. If the microscope specimen consists of a number of particles, and if the output of the microscope is taken directly to a high-speed counter, each particle will be crossed by the spot more than once, and the counter will register the total number of intercepts, giving a count greater than the number of particles in the field. In order to obtain a count equal to the number of particles in the field, the following development has been made.

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  1. 1

    Roberts, F., and Young, J. Z., Nature, 167, 231 (1951).

  2. 2

    Walton, W. H., Nature, 169, 518 (1952).

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  1. Department of Anatomy, University College, London, W.C.1

    • F. ROBERTS
    •  & J. Z. YOUNG


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