Practical plane and solid geometry for advanced students, including graphic statics, adapted to the requirements of the South Kensington syllabus (1899)
Harrison, Joseph, Baxandall, George Albert · London Macmillan · leaf 420
theplan of the curve of penetration and an elevation of the curveon a vertical plane making 450 with the axis of the cylinder. 9. A cone, height 3, rests with its base on the ground, diameter of base 3. The axis of a cylinder 2 diameter is parallel to thevertical plane and inclined at 450 to the… … CHAPTER XVII CAST SHADOWS 326. Preliminary.—It is a matter of common observa-tion that the rays of light which emanate from any sourceproceed in straight lines in all directions through space,except so far as they may be intercepted by opaque objects,or otherwise influenced. If a surface receive…
