Mathematicall magick. Or, the wonders that may be performed by mechanicall geometry. In two books. Concerning mechanicall powers [and] motions. Being one of the most easie, pleasant, usefull, (and yet most neglected) part of mathematicks. Not before treated of in this language (1648)
Wilkins, John, 1614-1672 · London : Printed by M.F. for S. Gellibrand · leaf 319
Ge im Af | “| (Cap.t5. Mechanicall Motions. … || Where 4 B, reprefents a Screw | | | Covered over, C D EZ, one Helix or re- "| | volution of it, CD, che afcending || fide, Z D the defcending fide , che| | | point D the middle. The Horizon- | || tall line C F, fhewing how much of | || the Helix is filled with water, vz. | || of the afcending…
Mechanics · Geometry · Mathematics
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.
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