Plastic bobbin with 2, 50 and 500 turns of insulated copper wire and rotatable on vertical axis is mounted on a moulded plastic base, with leveling screws and four terminals, with magnetometer mounted at the center of the bobbin.
Bar magnet pair with keeper
Alnico Bar Magents (Pair) with spacer and keepers. Supplied in cardboard boxes Actual bars may be different size than stock photo.
Bar Magnet Alnico (Pair) Size are mentions below which we have :-
38 x 10 x 5 mm (1.5")
50 x 10 x 5 mm (2")
75 x 10 x 5 mm (3")
100 x 10 x 5 mm (4")
150 x 10 x 5 mm (6")
For investigating the magnetic field associated with a solenoid coil.
Coil size 51 x 92 mm.(diameter x length) approx.,diameter of wire 1.5 mm.
Magnetic field Demo, long solenoid
Helmholtz Coils are a special arrangement of coils that are placed in such a way as to generate a very uniform magnetic field between them when a current is applied.
The strength of the magnetic field is proportional to the number of turns in the coils and the current applied to them.
The Helmholtz Coils setup consists of two field coils mounted on a track to provide a uniform magnetic field between the coils.
The proper separation for Helmholtz coils is marked on the track.
A pair of precision coils and 400 turns of wire are wound on heat resistant former of about 150 mm diameter.
For ordinary magnets, iron bars, strips etc.
Consists of a 250 mm long solenoid wound with insulated copper wire and mounted on a base, with switch and 4mm terminals.
Operating voltage is 12 V A.C. or D.C. At 6A max.
This apparatus spins an electrically charged brass wheel spin, without the aid of a motor.
When the wheel electrified by a voltage source (battery), the slotted brass disc sets up eddy currents throughout the structure.
This electricity is then attracted to 4 strong neodymium magnets, causing the wheel to spin.
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