Baly, E. C. C. (Edward Charles Cyril), b. 1871 · London, Longmans, Green · leaf 312
Fig. 113. of the camera tube, and hence the angle of deviation. Attentionmay be drawn to the ring-(7, which is screwed on to the innercone a, and is provided with lugs; by screwing up the ring 0one is enabled to raise the outer cone off the inner one, if byany chance it has become fixed by…
Spectrum analysis
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