Abstract
The practical problems encountered in the design and construction of a rotating mirror camera for studying the growth and wriggling behaviour of an unstable pinched arc discharge are discussed. Details are given of the optical calculations necessary to obtain a writing speed of 2 mm μsec-1 with a lens aperture of f/4.5 using a 65000 rev min-1, 0.5h.p. induction motor to drive the mirror. A new method is given for minimizing the effects of image de-focusing caused by the rotation of a thick mirror. The mechanical construction of the camera casing, film carrier and film cassettes is described together with details of the manufacture, balancing and polishing of the mirror.
Published Version
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