3B Scientific Kolbe's Electroscope - Manual

3B SCIENTIFIC ® PHYSICS
1
Kolbe's Electroscope 1001027
Instruction Sheet
01/13 ALF
1 Scale
2 4 mm earth socket
3 Support with pointer
4 Top plate / Insulator
5 4-mm socket
6 Capacitor plate
1. Description
The electroscope is used for the detection of
electrical charges and voltages with high
sensitivity.
The electroscope consists of a metal housing
with a 4 mm socket for grounding purposes and
glass front and rear. The support for the pointer
with pivot bearing is attached electrically insu-
lated to the top plate. The pointer is suspended
asymmetrically and so its weight delivers the
restoring moment. At the upper part of the
device there is a 4 mm socket which is
connected to the pointer support for mounting a
sphere and a capacitor plate. A scale allows
reading of the electrical charge.
For demonstration experiments the electroscope
is suitable for shadow projection.
2. Equipment supplied
1 Electroscope
1 Capacitor plate with 4-mm plug
3. Technical Data
Measuring range: 0 – 6 KV
Dimensions: 170 x 110 x 190 mm³