(Kontakt-Pendel)
Description: This stand holds two pendula which can start from
varied heights. The falling pendula, make electrical contacts
along the arc as they swing and thus provide a source of
precisely-controlled timed pulses. (Expanded caption Copyright
1998, Edward J. Haupt)
(Source: Wundt's Physiologische Psychologie, not otherwise
cited)
Source of illustration: Zimmermann, E. (1903). XVIII. Preis-
Liste über psychologische und physiologische Apparate
(p. 30). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type: component
Stimulus: N/A
System: N/A
Output: N/A