Baly, E. C. C. (Edward Charles Cyril), b. 1871 · London, Longmans, Green · leaf 311
which is a dia-gram of a horizontal sectioncut along the dotted lineZZof Fig. III. Thecolhmatoris screwedinto the inner cone a at g,and the outer cone b isslotted from h to h to per-mit of its rotation within thenecessary limits; the tele-scope is screwed on to the outer cone b at i, while the… … Fig. 112. 294 SPECTROSCOPY screwed into the disc /; the plug/is held in position by lock-nuts to prevent its falling out when the apparatus is notexhausted. The disc / is the platform upon which the prismtable rests; this may be rotated by turning the plug/, whichmay readily be done by means of a…
Spectrum analysis
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