Karl Marbe's color variator
15 x 50 x 15 cm (h x w x d)

Karl Marbe developed and built this color variator around 1893/94 during a research stay with Wilhelm Wundt in Leipzig.
It was the first apparatus of its kind that made it possible to change the proportions of the colors during rotation.

Mehr von The Center for the History of Psychology presents:

Würzburg, March 23 1945
120 x 120 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Edition 1 to 7 of Richard Paulis course in experimental psychology
35 x 27 x 20 cm (h x w x d)
The Center for the History of Psychology presents:
Otto Selz (1881-1943)
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Henry Jackson Watt (1879-1925)
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Karl Bühler (1879-1963)
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents: