Baly, E. C. C. (Edward Charles Cyril), b. 1871 · London, Longmans, Green · leaf 311
gtripod stand, d, a lock nut being shown at e. This cone isbored out in the centre, and forms the prism chamber; it hasa cover, c, accurately fitted upon the top. Over the outside ofthe cone a is fitted the hollow cone b, which is accuratelyground upon a, so that a perfect fit is obtained all over… … Fig. III. allows the latter to be rotated round the central vertical axisof the instrument. The method of attachment of the collimatorand camera tube is shownin Fig. 112, which is a dia-gram of a horizontal sectioncut along the dotted lineZZof Fig. III. Thecolhmatoris screwedinto the inner cone a…
Spectrum analysis
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