(Elektromagnetischer Unterbrecher für dauernden
Stromschluss)
Description: This is an electromagnetic relay with normally open
(III) and normally
closed (II) quicksilver (mercury) contacts. It was used to
provide a steady closure which controlled the duration of an
electrical supply. (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. 27). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type:component
Stimulus: N/A
System: N/A
Output: N/A