(Vertikal-Induktorium)
Description: This device is something like the (sled) runner
inductorium. In order to
allow low-friction movement, the coil moves along a double column
and has a balancing weight on the other side, connected by a
pulley at the top of the columns. A coil at the bottom pushes the
movable coil away from the primary coil set at the bottom of the
stand. The two columns are marked with both a time and distance
(which could be individually calibrated) to show the equivalence
of distance and the length of time the current was active. This
is a primarily a timing device for periods of seconds and was
first devised by Emil du Bois-Reymond. (Expanded caption
Copyright 1998, Edward J. Haupt)
(Source: None given.)
Source of illustration: Zimmermann, E. (1903). XVIII. Preis-
Liste über psychologische und physiologische Apparate
(p. 40). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type: component, timing
Stimulus: N/A
System: N/A
Output: N/A