Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 142
l section in Figure 3. The two sides, S-^S^,of the disk areviewed simulta-neously throughthe opening 0 bymeans of two mir-rors, M^M^, soplaced as to re-flect the surfacesof S^S^ to the ob-server. In mak-ing a measure-ment, the diskshould be set so that the spot and its surroundingsappear equally… … -be Fig. 3. 14 PHYSICAL LABORATORY EXPERIMENTS of the screen. The complete theory of the Bunsen screenis not simple. For an elementary discussion see Stines Photometrical Measurements, page 66. On the wholethe best procedure is to set the disk at such a position thatthe contrast between the spot…
Physics · Mechanics
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