Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 127
the line of shadow. Shadow of a Point.—If a line is drawn through a point inspace in a direction opposite to the source of light, the pointin which this line pierces the plane of projection is theshadow of the point on that plane. 112 MECHANICAL DRAWING. To find the shadow on the H.P. of a point in… … Fig. 155. vert. proj. of R. Bv is the point where R pierces V whenprolonged below H.P., and BH is its hor. proj. in the G.L.The projections of R would then be AVBV and AHBH. The shadow of a point in V may be found in a similarmanner, Shadows of Rig J it Lines.—The shadow of a right line ona plane…
