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:

Joachim Hoffmann
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Otto Heller with his stimulus series of apples
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Lothar Schmidt-Atzert
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Janke & Wittkowski
150 x 100 cm (h x w)
The Center for the History of Psychology presents:
Gustav Lienert (1920-2001) and Wilhelm Janke (1935-2012)
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents: