Visual illusions, their causes, characteristics and applications (1922)
Luckiesh, Matthew, 1883- · New York, Van Nostrand · leaf 212
199 ARCHITECTURE ing projection at the eye. This is obvious if the eye is considered to be at the point where the inclined lines meet. In order to compensate for the variation in visual angle, there must be a series of rectangles increasing considerably in height toward the top. The correction is… … Fig. 86. — Illustrating the influence of visual angle upon apparent vertical height. that an inscription on an ancient temple was written in letters arranged vertically, and in order to make them appear of equal size they were actually in- creased in size toward the top according to the law…
Optical illusions
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
