Johannes von Kries | |
---|---|
Born | |
Died | 30 December 1928 | (aged 75)
Known for | Von Kries coefficient law Von Kries transform |
Scientific career | |
Fields | Physiological psychology |
Johannes Adolf von Kries (6 October 1853 – 30 December 1928) was a German physiological psychologist[1] who formulated the modern “duplicity” or “duplexity” theory of vision mediated by rod cells at low light levels and three types of cone cells at higher light levels.[2][3] He made important contributions in the field of haemodynamics.[4] In addition, von Kries was a significant theorist of the foundations of probability.
When von Kries was at Freiburg (1880–1924),[5] he was called to succeed Professor Emil Du Bois-Reymond as chair of physiology at the University of Berlin, but he declined.[6]
Von Kries has been called Helmholtz's "greatest German disciple".[7]