Space and geometry in the light of physiological, psychological and physical inquiry (1906)
Mach, Ernst, 1838-1916, McCormack, Thomas Joseph, 1865-1932 · Chicago The Open court publishing company; [etc., etc.] · leaf 117
istinguish between pure rotation, no SPACE AND GEOMETRY pure displacement, and the motion compounded ofthese two independent motions. The first geometry-was of course not based on purely metric notions,but made many considerable concessions to the phy-siological factors of sense.1 Thus is the… … Fig. 14. rotation of a straight line with respect to another(measured by the arc so described). Doubtless noone ever demanded special proof for the equality ofangles at the origin described by the same rotation.Additional propositions concerning angles resultedquite easily. Turning the line b about…
Geometry -- Foundations · Space perception
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
