Lange, David C. (David Christoph) · New York : John Wiley & Sons ; London : Chapman & Hall · leaf 65
Fig. 6 35-15-52 Fig. 7 … Fig. 8 GENERAL PRINCIPLES 55 Indirect Rays of Light are those Rays which are reflectedback on an object from some other object. This is called,also, Reflected Light. (Fig. 1, a and h.) DifTused Light is that light which is widely scattered,and has its rays spread out in all directions from the…
Shades and shadows · Geometry, Descriptive
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