Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 159
p screw, G, and a tangentscrew to secure a fine adjustment of the position of thetelescope. It also carries a pair of verniers 180 degreesapart. In high-grade instruments both telescope and col-limator are provided with levelling screws, F, in addition tothose on the base of the instrument itself.… … Fig 10. ADJUSTMENTS OF SPECTROMETER 31 be rendered perpendicular to and must intersect in the ver-tical axis of the instrument about which the prism tableand telescope turn. 2. The telescope must be adjusted for parallel rays. 3. The collimator must be adjusted for parallel rays.…
Physics · Mechanics
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