Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 235
y reduced, for the shad-ow of the base can then be found b^finding the shadow of the center J ofthe base and drawing a circle of thesame radius. (See Fig. 19) 63. In general, to find the shadowof any cone, find the shadow of itsapex, then the shadow of its base, drawstraight lines from the former,… … angle of 35°-15-52 or less. that is, making the true angle of the ray of light or less, with the co-ordinate plane, the shadow of theapex will fall within the shadow of the base, and, therefore, thecone will have no shade on its conical surface. 65. Problem XI. To find the shade and shadow of a…
Architecture · Building · Carpentry
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