Leipzig: Leopold Voss, 1856-60-66-67. First edition, and the only recorded copy in the original parts, of “the most important book on the physiology and physics of vision” (Grolier/Horblit), and “one of the greatest books on physiological optics” (Garrison-Morton). This work encompassed all previous research in the field, including the results..... More
Item #5275

Berlin: Königlichen Akademie der Wissenschaften, 1868. First edition, very rare, of Helmholtz’s famous and important contribution to non-Euclidean geometry, ‘On the facts which lay at the foundations of geometry’. “Motivated by his study of visual perception, throughout the mid-1860s Helmholtz investigated the most general analytic expressions of spatial relations. He..... More
Item #5428