Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 22
fers from the cylindrical one in that it is described on the surface of a cone in-stead of on that of a cylinder; but the construction differs but slightly from the one described. Byfollowing out the same principles, helices may be represented as lying upon spheres or any other surfacesof… … 18 HORN. HEXAEDRON, the Cube. One of the five rep^ar or Platonic bodies, and so called from its havingsix faces. The square of the side or edge of a hexaedron is one-third of the square of the diameter ofthe circumscribing sphere; and hence the diameter of a sphere is to the side of its inscribed…
Mechanical engineering · Mechanics · Engineering
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