Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 215
. H^ is also the V projection of the ttmljra of the point (t andit will be seen that the shadow of a on V is the intersection of itsumbra with Y. 176 SHADES AND SHADOWS 20. Fig. 6 shows the construction for finding the shadow ofa point a on H. 21. Fig. 7 shows the construction for finding tha… … shadow of the point a, situated as in Fig. 5, that is, nearer the Yplane than the H. The actual shadow would in this case fall onY, but it is sometimes necessary to find its imaginary shadow on H.The method of determining this is similar to that explained inconnection with Fig. 5. Draw E.^ until it…
Architecture · Building · Carpentry
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