Intervallapparatus according to Anton Appunn, Hanau
24 x 52 x 26 cm (h x w x d)

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.

Plus de The Center for the History of Psychology presents:

Otto Heller and his team at Chair III
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Gustav Lienert & Wilhelm Arnold
120 x 150 x 2 cm (h x w x d)
The Center for the History of Psychology presents:
A stimulus series of apples
18 x 80 x 40 cm (h x w x d)
The Center for the History of Psychology presents:
Institute for Psychology, Chair I
150 x 100 x 2 cm (h x w x d)
The Center for the History of Psychology presents:
Colloquium
100 x 150 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents: