Burn, Robert Scott · London : Ingram, Cooke, and Co. · leaf 111
A few examples will therefore suffice, especially asthe rules are the same, though, from the fact of such luminaries radiatinglight in all directions, rather differently applied. In fig. 70, the shadowof the work-box is found on the shadow-plane, in this case a table, by meansof intersections of… … fig. 71. from him. The shadow of the picture-frame on the wall being thrown ona vertical shadow-plane, the foot F2 of the luminary on that plane is to befound by drawing F G to the wall, and there making G F2 perpendicular toit; the intersection of this last with L F2 is the foot for that plane,…
Drawing · Wood-engraving
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
