Beschreibung:

77 p. with 12 tables and 23 figures. 4°. Blue cloth. Minor spots on cover. Very good copy. - Autograph dedication by the author to German physicist Frank Matossi, specialised in optics as well, who had conducted research in the U.S. for many years.

Bemerkung:

Physical mechanism of vision. Spectral relationship between lumen and quanta flux. Efficiency of human eye in comparison with artificial photodetectors. Lumen relationship and spectral distribution of quanta flux of polychromatic sources. Color perception