educational materials - SPECTRUM Nasco Shopping Mall Divisions

Physical Science
Electricity/Electrostatics
Barlow’s Wheel
Barlow’s Wheel, invented by an English
mathematician in 1822, is a type of electric
motor that demonstrates the relationship
between electricity and
magnetism. As electrons enter the
system, eddy currents are attracted
to powerful neodymium magnets,
causing wheel to spin. Requires four
“AA” batteries (not included). Sh. wt.
4.50 lbs.
SB48373M— $87.80
Gold Leaf Electroscope
Sturdy electroscope features a metal case with front
and rear glass windows for preventing air currents
from affecting the deflection of the leaves. Leaves
are gold and aluminum. Leaf support rod is held in
place by an insulating plastic sleeve. A graduated
scale is also provided for measuring the deflection
from 0°-90°. Includes instructions. Overall dimensions:
6" x 4" x 8". Grades 6—12. Sh. wt. 0.68 kgs.
SB34799M — $30.50
What Is... Resistance?
Concepts you always wanted to learn, teach, and prove about resistance! In this kit
experiments prove and explain the concepts of and prove the various laws governing
resistance. There is finally a comprehensive, hands-on activity kit that demonstrates
Ohms Law, factors affecting resistance, length, cross-section, heat, series, parallel, and so
much more. Detailed instructional booklet provided along with two multimeters for use
as voltmeter and ammeter, rheostat, battery boxes, text wires, resistance coils, alligator
clip leads, candles, lamp socket, bulbs, and contact key. Sh. wt. 11 lbs.
SB42283M — $136.00
NASCO Friction Rod Kit
The perfect kit for demonstrating the generation of electrostatic charges using a friction
rod. The complete kit includes a solid plastic rod, hard rubber rod and ebonite, and
a hollow glass rod (closed at one end); three friction pads (flannel, silk, animal fur); balloons;
and instructions. Sh. wt. 0.37 kgs.
SB13247M — $34.25
Set of 4 Friction Rods.
Sh. wt. 0.37 kgs.
SB29015M — $11.55
Set of 4 Friction Pads.
Sh. wt. 0.29 kgs.
SB29016M — $26.05
Electroscope
Show how two similarly charged objects repel.
Classic electroscope with 10-cm square glass
view area. Includes two pair die-cut aluminum
foil, brass hanger, glass panels, ball terminal,
insulator, and instructions. Grade 6 and up. Sh.
wt. 0.37 kgs.
SB28885M — $33.65
Replacement Foil. Two pair die-cut aluminum
leaves for use with Electroscope (SB28885M). Sh.
wt. 0.06 kgs.
SB28912M — $3.90
Force on a Conductor in a Magnetic Field
Demonstrates the interaction between electricity and magnetism. A metal rod rests
on a pair of metal rails in a U-shaped magnet. When current passes through the rod,
it reacts to the force and moves along the rails. Detachable magnets allow change of
polarity. Operates on 3V DC. Measures 7-1⁄2" x 2-3⁄4" x 2-1⁄3". Sh. wt. 0.88 lbs.
SB48375M — $23.75
Basic Electroscope
Sensitive and easy to use. Transparent plastic
case prevents air flow from interfering with
the deflection of leaves, but allows observation
from all directions. Grounding eliminates
deflections caused by charges residing in the
case. Measures 6-1⁄3" x 4" x 2-3⁄4".
Sh. wt. 0.38 lbs.
SB48376M — $8.95
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