Maker: Zimmermann, Leipzig
year made: c. 1910
A belt driven rotation device used for experiments on colour perception. The Zimmermann catalogue of 1928 describes how it was used with a "coloured disc on which the the size of the sectors may be varied during rotation."
August Kirschmann of Toronto became famous for his experiments on colour mixing.
In the Literature:
Kirschmann, August (1898). The Representation of Shades and Tints of Colour by Rotating Disks, American Journal of Psychology, 9.
Zimmermann, E. (1928) Psychologische und physiologische Apparate, Catalogue, Liste 50. Leipzig-Berlin.
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