Johannes von Kries

Johannes von Kries
Born(1853-10-06)6 October 1853
Roggenhausen, Prussia
Died30 December 1928(1928-12-30) (aged 75)
Freiburg im Breisgau, Baden
Known forVon Kries coefficient law
Von Kries transform
AwardsPour le Mérite (1918)
Scientific career
FieldsPhysiological 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.

  1. ^ Charles A. Riley II (1996). Color Codes: Modern Theories of Color in Philosophy, Painting and Architecture, Literature, Music, and Psychology. Univ. Press of New England, Hanover NH. ISBN 0-87451-742-7.
  2. ^ John Wallace Baird (1905). The Color Sensitivity of the Peripheral Retina. Carnegie Institution of Washington. p. 24.
  3. ^ Jon E. Roeckelein (1998). Dictionary of Theories, Laws, and Concepts in Psychology. Greenwood Press. ISBN 0-313-30460-2.
  4. ^ AS Tijsseling, A Anderson (2007). "Johannes von Kries and the history of water hammer". Journal of Hydraulic Engineering. 133 (1): 1–8. doi:10.1061/(ASCE)0733-9429(2007)133:1(1). S2CID 129866062.