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The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)

Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 279

An illustration from The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies, 1856, leaf 279
ification of thelast instrument, designed for showingthe efiect of rapid motion in blendingcolors. In this the axial shaft revolveson a support between the poles of themagnet, having the break-piece beneaththe armature. Upon the end of the shaftabove is fixed a thin pasteboard disc, uponwhich are… … What does Fig. 219 show? 274 RECIPROCATING ARMATURE ENGINE. carrying with it the disc so rapidly as to cause the seven colorsto appear blended in one, viz., a brownish white. 247. The Reciprocating Armature Engine^ Fig. 220, is an

Physics

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