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 308
Dedalus. on, .7LaAB2, co be-inquired after is what kind of | inclination thefe Helicall revolutions | of the cylinder have unto the Hori- | zon, which may be thus found out. … Let 4 B reprefene a Cylinder with | two perfect revolutions in it, unto which cylinder the perpendicular ing fuppofed to bee double unto the compafle ‘or circumference of the | cylinder. Now ic is certainthat the angle CED, is the fame with thar 'by which the revolutions on the cy- i linder are…
Mechanics · Geometry · Mathematics
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.
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