I n s t r u c t i o n S h e e t
012-05247C
Conductive Spheres
ES-9059C
800-772-8700
www.pasco.com
®
*012-05247*
Introduction
The PASCO ES-9059C Conductive Spheres are convenient
objects upon which to store electrical charges. The spheres are 13
centimeters (cm) in diameter and are made of nickel-plated ABS
plastic. Each is mounted on a non-conductive rod of polycarbon-
ate (about 10
14
ohms) and attached to a stable support base. Each
sphere has a thumbscrew terminal on the lower half of the sphere
for attaching a ground cable or a lead from a voltage source.
NOTE: When handling the conductive spheres, take care to keep
each sphere and non-conductive rod free of dirt, grease, and fin-
gerprints to minimize leakage of charge from the spheres.
Recommended Equipment*
•
Faraday Ice Pail (ES-9042A)
•
Basic Electrometer (ES-9078)
•
Electrostatics Voltage Source (ES-9077)
•
Charge Producers and Proof Plane (ES-9057B)
Related Equipment*
•
Conductive Shapes (ES-9061)
*See the PASCO catalog or web site at www.pasco.com for more informa-
tion.
Operation with a Voltage Source
To use the conductive spheres with the PASCO ES-9077 Electro-
statics Voltage Source, connect one of the high voltage power
supply output terminals (+1000 V, +2000 V, +3000 V) to the
thumbscrew terminal on the lower half of the conductive sphere.
Note that the voltage source accessories include two
banana-plug-to-spade-lug insulated wires.
If you are using the PASCO ES-9078 Basic Electrometer to mea-
sure voltage, connect the electrometer ground terminal
(GROUND) to the black ground terminal on the voltage source.
Conductive sphere
Thumbscrew
Thumbscrew
Base
Non-conductive
rod
Conductive sphere
Electrostatic
Voltage
Source
