Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 155
espectrum. Bunsen Spectroscope.—In this form of instrument onlyone prism, placed at its angle of minimum deviation, is used,whence the rays suffer a deviation, as shown in Figure 9. Inother respects this instrument is similar to the preceding,the above description of the scale, eye-piece, etc.,… … ing method of adjustment applies to either instrument. Theadjustment of the collimator is usually made once for allwhen the instrument is constructed; i.e., the slit, *S, is placedat the principal focus of the collimating lens, C. To adjustthe telescope, direct, by moans of a mirror, a beam of…
Physics · Mechanics
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-335-226.webp)
