Smith, David Eugene, 1860-1944 · Boston, New York [etc.] Ginn and Company · leaf 236
es. Someauthors give this as a basalproblem, although it is morecommonly given as an exercise or a corollary. One ofthe most obvious applications of the idea is that relatingto the transmission of circular motion by means of aband over two wheels,2 A and B, as shown on page 226. 1 From J. Bennett,… … Gothic Designs employing Circles and Bisected Angles 225 226 THE TEACHING OF GEOMETRY The band maj~ either not be crossed (the case of the twoexterior tangents), or be crossed (the interior tangents),the latter allowing the wheels to turn in oppositedirections. In case the band is liable to change…
Geometry
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