BICYCLE DYNAMO 1538
A cycle dynamo on a wooden base 200 x115x12mm. and provided with two sets of gears driven by a hand crank for fast or slow rotation. Two 4mm socket terminals are provided for the dynamo output, connected in parallel with an M.E.S. lamp holder and 2.5V bulb.

ELECTRIC MOTOR KIT 1539
Based on arts from the Westminster electromagnetic kit comprising 6 wood support base 100x45x10mm, length x width x height, 6 wood armatures, 6 aluminium shafts, 6 mild steel yokes, 12 magnets, 24 split pins, 125 rivets, 1 reel plastic covered copper wire, 3mtr tubing.

MAGNET FIELD TUBE 1540
Ideal for 3-D demonstrations of magnetic fields. Constructed of a sealed round plastic viewing tube with 1.3 oz of iron filings encased and designed with a half inch diameter hole through the center for the super strong alnico cylindrical magnet. Size: 4” L X 3” in diameter.

MAGNETIC FIELD DEMONSTRATOR 1541
Ideal for 3-D demonstrations of magnetic fields. Constructed of a sealed round plastic viewing tube with 1.3 oz of iron fillings in fluid of proper viscosity. Unit can be placed on an overhead projector for classroom demonstrations.

FARADAY’S ELECTROMAGNETIC INDUCTION PROJECTUALS SET 1542
These projectuals can be used with or without an overhead projector to study electricity and magnetism, from the simple magnet to electromagnetic induction. A series of experiments paralleling Faraday’s work are performed using a milliammeter and 3 solenoids of 20, 40 and 80 turns. Includes study guides. The meter can also be used in other experiments.

LENZ’S LAW APPARATUS 1543
Consists of 2 metal rings connected by an aluminum beam that can rotate freely on a support. One of the rings is a closed loop; the other has an opening for comparison. When a bar magnet moves into or out of the loop, the magnetic flux will change. According to Lenz’s law, a current will be induced in the loop to oppose the change. Students can verify the law by analyzing the movement of the loop.

IRONCLAD ELECTROMAGNET 1544
In 1820 Hans Christian Oersted discovered that electric currents produce magnetic fields-electromagnetism. Study electromagnetism by observing the effect of using multiple batteries to change Voltage and Amperage and how this relates to magnetic field. Experiments with lifting capacity and explore user for the electromagnet. Requires 4 batteries (not included).

FERROFLUID DISPLAY CELL 1545
With this display cell you can easily demonstrate magnetic lines of force in 3 dimensions. The cell is composed of a sealed glass vessel 18mm H x 6.5 mm diameter that contains a specially formulated mixture of clear liquid transport medium and magnetically reactive compound known as a ferrofluid. Ferrofluids take on the shape of the magnetic field that is passing through them. As a result, you can visualize the field in 3 dimensions. The display cell keeps the fluid from evaporating and also keeps the fluid from coating magnets that are brought close to it.

FERROFLUIDIC ADVENTURE SCIENCE KIT 1546
Explore the science of magnetism with an amazing substance known as ferro-fluid. Visualize magnetic field lines and lines of force in 3 dimensions. This Kit-to be used by students working in groups of 4 or as a teacher demonstration-contain all materials necessary to perform experiments about magnetic lines of force around permanent and electromagnets, magnetic shielding, floating pennies and other objects, by the variable density properties of a ferro-fluid in a magnetic field. Through these activities students learn where ferrofluids are used in objects they use every day. This kit can also be used to show students how to construct artistic 3-D magnetic structures.
Kit includes: MSDS sheets, 2-ml transfer pipette, power ring magnets, sealed display cell, 3-ml syringe, letter "A" Magnet, 50-ml bottle, EFH Ferro-fluid, 2 blue button magnets, 5 aluminum dishes and a pair of protective latex gloves.

MAGNETIZING AND DE-MAGNETIZING COIL 1547
Low voltage, suitable for magnetizing and demagnetizing ordinary magnets, iron bars, strips, etc. Comprises a solenoid wound with insulated copper wire and mounted on a base, complete with switch and 4mm terminals. Solenoid 250mm long x 35mm internal diameter. Operating voltage 12V A.C. or D.C. at 6A, Magnetizing by A.C. or D.C., Demagnetizing by A.C. only

MAGNETIC FIELD DEMONSTRATION, VERTICAL COILS 1548
Single turn and 5 turn coils for investigating magnetic field associated with a vertical coil. Maximum current is 8A for the single turn and 5A for the 5 turn. Coil diameters 62mm copper wire diameter 1.5mm.

MAGNETIC FIELD DEMONSTRATION, LONG SOLENOID 1549
For investigating the magnetic field associated with a solenoid coil. Coil 51 x 92mm (diameter x length) copper wire 1.5mm diameter.

INDUCED CURRENT APPARATUS 1550
Consisting of primary coil of insulated copper wire wound upon cylinder with terminals, secondary coil wound upon cylinder into which primary fits. A soft iron core fits the cylinder of the primary. Complete with terminals.