(Didactic Division)

Magnetism

Horse Shoe Magnets

ALINCO, with keepers. Dimensions are nominal. Supplied in cardboard boxes.
A. 50x12x15mm.
B. 75x12x15mm.
C. 100x12x15mm.

Cylinderical Magnets

Chrome Steel, 12mm. diameter, in Pairs.
A. Length 50mm.
B. Length 100mm.
C. Length 150mm.

U-Shape Magnet

ALINCO, with keepers. Dimensions are nominal. Supplied in card board boxes.
 
Size (mm)
Center Gap
Lifting Power
A.
37x13x10
18mm.
350 gms.
B.
50x13x10
18mm.
500 gms.
C.
75x13x10
18mm.
500 gms.

Electromagnet

Lifting type. Built with a coil of 300 turns of insulated copper wire. Operates on 6-12 volts and will easily lift 15 kg. when energised by a current of 6-8 amperes. Complete with disc armature.

Electromagnetism Coil

Output variable from 100V to 5KV DC at 50 A, 6.3V AC at 2A, separate earthing terminal.

Demonstration Induction Coil

With primary of heavy gauge enamelled copper wire, approximate resistance 0.5 ohms wound on former 110x30 mm. length x diameter. Secondary coil of fine enamelled copper wire, approximately resistance 100 ohms on former 120 x 82 mm. length x diameter. Both coils fitted with 4 mm. sockets. Iron core 160x15 mm. length x diameter.

Barlow's Wheel

For demonstrating the conversion of electric energy into mechanical energy. Star-shaped copper disc rotatable vertically on pair of adjustable centers and dipping into mercury trough between the vertical limbs of a small horseshoe magnet on a wood base. Disc adjustable vertically on metal pillar which is connected to one of two terminals mounted on base. The other terminal is connected to the mercury trough. The apparatus will operates on 4 volts at which voltage it takes 1.8 amps, with out battery.