Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 126
ORTHOGRAPHIC PROJECTION. Ill SHADOWS. Let Ry Fig. 154, be the direction of the rays of lightand C an opaque body between the source of light and a … Fig. 154. surface S. The body C will prevent the rays from passingin that direction, and its outline will be projected at D onthe surface 5. D is the shadow of C. The line which divides the illuminated portion of thesurface 5 from the shadow D is called the line of shadow. Shadow of a Point.—If a…
