(Rotations-Apparat nach Marbe)
Description: This is another type of rotational apparatus used
to demonstrate the principles of color mixing.
The distance between the counter-rotating disks is variable
(Expanded caption Copyright 1998, Edward J. Haupt)
(Source:Karl Marbe, at the time of publication, Second Chair
(2. Vorstand) of the University of Würzburg
Psychological Institute, not otherwise noted.)
Source of illustration: Zimmermann, E. (1903). XVIII. Preis-
Liste über psychologische und physiologische Apparate
(p. 6). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type:demonstration
Stimulus: colored, gray, or patterned disks
System: vision
Output: N/A