Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 152
uctance in the circuit, be largely eliminated. In studyingarc and spark spectra, the arc or spark should not be placedclose to the slit, but at some distance from it, and the imageof the light source formed on the slit by means of a lens.This has the advantage that the spectrum of different partsof… … I r passing an electric discharge through the tube. The formof vacuum tube best adapted for this purpose is shown inFigure 7, (a) and (6). These are so-called end on tubes, thedischarge being viewed along instead of across the capillary,as in the ordinary form of Geissler tube, Figure 7 (c). 24…
Physics · Mechanics
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