educational materials - SPECTRUM Nasco Shopping Mall Divisions

ELECTROLYSIS
Hoffman Electrolysis Apparatus
This complete apparatus will demonstrate the decomposition
of water (separation of oxygen and hydrogen). Each
of the glass tubes has stopcocks and is graduated to give
precise measurements. The tubes are mounted on a special
stand which is fitted with binding posts. Includes platinum
electrodes. Use clamp SB18967M to hold center glass tube.
Overall height: 65 cm.
Sh. wt. 2.95 kgs.
SB11120M — $124.90
Replacement Parts
for Hoffman Apparatus
Glass Parts Only. The graduated “U” tube with stopcocks and
the glass thistle tubes are included. These are the same parts
used in the complete apparatus (SB11120M). Sh. wt. 0.51 kgs.
SB10809M — $71.35
Apparatus Support. This specially designed, heavy metal
support has binding posts in the base and double clamps
on the rod. A special clamp with prongs for supporting the
lower part of the apparatus is also supplied. The stand will
hold the apparatus securely without causing strains in the
glass parts. Sh. wt 2.67 kgs.
SB10770M — $31.55
Platinum Electrodes. These flat electrodes were designed for the Hoffman
Electrolysis Apparatus. The platinum lead wires are sealed in glass tubes. The glass
tubes are inserted in No. 1 rubber stoppers. These electrodes will fit SB11120M and
SB10809M listed above. Sh. wt. 0.09 kgs.
SA09072M — $35.15
Physical Science
Electricity
ELECTROMAGNETISM
Electromagnetism and current Electricity
— Intermediate Level Multi-group Kit
Specific concepts investigated relate to: magnetic fields around conductors, the
“left hand rule” for determining direction of current flow and magnetic field in
conductors, “closed” and “open” circuits, direction of current flow in circuits, recognizing
complete circuits; making an electromagnet, factors which affect the
strength of an electromagnet, conductors and insulators, electrolytes; and series
and parallel circuits. Grades 4—9.
13 Investigations:
Typically a minimum of
12 class sessions required
to complete all activities.
Teacher’s guide included.
Sh. wt. 8.16 kgs.
SB15342M — $282.95
Teacher’s Guide.
Sh. wt. 0.34 kgs.
SB22447M — $16.05
Electrolysis Apparatus
A simple type of electrolysis apparatus, but demonstrates
the principle as efficiently as other expensive
apparatuses. Consists of a plastic container measuring
3" dia. x 2½" H, total height 3¾", with mounted carbon
electrodes. The bottom of the container has cutouts
so that leads can be connected to the electrodes with
ease. Supplied complete with two alligator clip leads
(one red, one black), two graduated test tubes, and
instruction manual. Works on 12 V DC. Sh. wt. 1.25 lbs.
SB47146M — $26.15
Set of 2 Teacher DVDs —
Electromagnetism and Current
Electricity. Sh. wt. 0.48 kgs.
SB46197M — $23.25
SciQuest® Electromagnetism and
Current Electricity Intermediate Kit
(SB15342M) and Set of 2 Teacher
DVDs. Sh. wt. 10.15 kgs.
SB46146M — $327.20
Primary-Secondary Coil
This primary-secondary coil is ideal for studying electricity
and magnetism in the physics classroom. It is also an excellent
demonstration induction coil that is remarkably easy
to use. Consisting of two wire coils and one soft iron core,
it features a primary (inner) coil heavy wire and a secondary
(outer) coil of fine wire. Both coils feature binding posts attached to
sturdy plastic mountings which are non-metallic for maximum efficiency. Instructions
include questions and theory. Applications include: electromagnetic induction (Faraday’s
and Lenz’ laws of induction), induced currents and induced magnetic fields, and step-up/
step-down transformers. Contains: primary coil with 250 turn in two layers of #23 wire
(1.4 resistance), secondary coil with 1,250 turns in four layers of #28 wire (23 resistance),
9 mm dia. iron core, and instructions. Use requires battery, galvanometer, and switch.
Grades 6—12. Sh. wt. 0.94 lbs.
SB43536M — $39.90
Conductivity of Solution Test
Students can visibly observe the increase and decrease of
a liquid’s conductivity. A simple and safe 3V system uses a
lamp that will brighten and dim with varying conductivity.
Sh. wt. 0.37 kgs.
SB19147M — $12.30
Tesla Coil
Transmit electricity without wires. Watch lightbulbs glow
in your hand. Hard-to-find source of high frequency high
voltage electricity! Safe because current flows over, not into,
your skin. Arcs to 3". 50,000V potential. Includes: vibrator,
two capacitors, cord and plug, primary and secondary coils,
adjustable spark gap, safety guard, lamp socket, two sizes
of antenna plates, neon bulb, discharge electrode, plastic
and copper wires, cooling fan, fuse, and instructions with 19
experiments. Fully assembled. 110V, 60 cycle AC. Grade 8 and
up. Sh. wt. 3.75 lbs.
SB28821M — $351.35
Electromagnet Kit
Designed to help students learn the principles and applications of
electromagnets. Includes two coils on plastic spools, a U-shaped iron
core, a straight iron core, two magnetic needles with stands, and a
pair of wires. Students can build a bar and a U-shaped electromagnet
with a 6V battery or DC power supply, and determine the magnitude
and polarity of electromagnetic forces. Comes in a 5" x 5" x
1½" plastic case. Elementary through high school. Sh. wt. 0.25 kgs.
SB33489M — $30.90
Conductivity Meter
A very simple and easy unit to
compare conductivity of different
solutions, acids, or salts. Dip
the brass probes, press the button,
and note. The conductivity
can be compared in 10 levels.
Green LED gives a quick visual
comparison. 5-1⁄2" L x 11⁄16"
thick. Battery included.
Sh. wt. 0.63 lbs.
SB48330M — $32.45
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