Intervallapparatus according to Anton Appunn, Hanau
24 x 52 x 26 cm (h x w x d)
3D-Animation Intervallaparatus

The company Anton Appunn from Hanau near Frankfurt built interval apparatuses for Carl Stumpf's experiments. Together with Appunn, Stumpf conducted sound analyses on the organ as well as psychoacoustic investigations. Later, other companies also offered such acoustic devices.
The Appunn company also built instruments for Hermann von Helmholtz.

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The Center for the History of Psychology presents:

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Vigilance test
40 x 80 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Control task
40 x 80 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Main-Post coverage 1968
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Ludwig Pongratz (1915-1995)
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Walter Pfister
50 x 50 cm (h x w)
The Center for the History of Psychology presents: