flinnsci.com 393
Electricity and Magnetism—
Electrostatics, continued
PHYSICS & PHYSICAL SCIENCE ELECTRICITY AND MAGNETISM
Friction Rods and Friction Pads
Friction pads are used together with friction rods to produce static electricity in
varying amounts and charges.
Catalog No. Description Size Price/Each
AP9169 Hard Rubber Friction Rod 12" $ 7.52
AP9201 Lucite® Friction Rod 10" 4.71
AP9202 Hollow Glass Friction Rod 12" 6.02
AP9203 Solid Glass Friction Rod 10" 7.35
AP9204 Animal Fur Friction Pad, Large 9" x 11" 21.93
AP9206 Wool Friction Pad 6" x 6" 6.13
AP9207 Flannel Friction Pad 6" x 6" 3.60
AP9208 Silk Friction Pad 6" x 6" 5.04
Pith Balls
Better pith balls? Yes! Because our pith balls are made from durable polystyrene, they
give a better electrostatic performance even in humid conditions.
Catalog No. Description Price/Pkg.
AP4624 Pith Balls Without Threads $6.84/12
AP4625 Pith Balls With Threads 6.34/6
Pith Balls
AP4624, etc.
Coulomb’s Law
Apparatus
AP9227
Coulomb’s Law Apparatus
Apparatus includes a rugged wooden base, rigid fiberboard housing, parallax eliminating
mirror, metric scale, grid, hardboard and Lucite® tops, acetate and vinyl strips,
pith balls, fabric squares, monofilament, and polyethylene insulators. Complete
instructions provided.
Catalog No. Description Price/Each
AP9227 Coulomb’s Law Apparatus $60.15
Electric Field Mapping—
Demonstration Kit
AP7282
Orion Science Equipotential Lines Kit
Explore equipotential surfaces and lines by mapping an electric field with this kit
from Orion Science. Both the power supply and the voltmeter are conveniently built
into the case, which doubles as storage for the components when not in use.
Catalog No. Description Price/Each
AP10976 Orion Science Equipotential Lines Kit $395.60
Electric Field Mapping—
Demonstration Kit
By: The Flinn Staff
Using a conductive pen, simply draw any type of charge configuration onto conductive
paper. By measuring the voltage at different locations between the charges,
you can determine lines of equal potential and then draw in or “map” the electric
field lines as well. Amazing! Find the field between a dipole, charged plates or a
quadrupole, or even measure the charge of an electric field during a thunderstorm!
Note: A power supply or 6-V battery, voltmeter and connector cords are required and
available separately.
Catalog No. Description Price/Each
AP7282 Electric Field Mapping—Demonstration Kit $132.08
AP5375 Power Supply, Multiple Voltage Battery Eliminator 119.00
Orion Science
Equipotential Lines Kit
AP10976
ELECTRICITY AND MAGNETISM—ELECTROSTATICS continued on next page.
Charge by…
Conductor
Insulator
Negatively
Charged Rod
Movement of
Electrons
Conductor
Insulator
Negatively
Charged Rod
Movement of
Electrons
Conductor
Insulator
Positively
Charged Rod
Movement of
Electrons
Movement of
Electrons
Insulator
Positively
Charged Rod
Conductor
Conduction –
(contact)
Induction –
(no contact)
Conduction +
(contact)
Induction +
(no contact)
Friction Rods and Friction Pads
AP9169, etc.
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