Visual illusions, their causes, characteristics and applications
Luckiesh's 1922 Visual Illusions, published in New York by Van Nostrand, is a technical study of optical illusions by a lighting scientist, written for designers, artists and psychologists. Its pictures are plain line diagrams and one half-tone relief portrait, showing how straight lines, converging strokes and curves appear distorted, which a designer can use when planning patterns, perspective or edges.
