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.

Plus de The Center for the History of Psychology presents:

Narziß Ach (1871-1946)
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Karl Marbe (1869-1953)
150 x 98 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Külpe on the Würzburg School
150 x 200 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Double sound pendulum
35 x 60 x 18 cm (h x w x d)
The Center for the History of Psychology presents:
Oswald Külpe at the double sound pendulum (~1900).
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents: