3B Scientific Magnetic Field Lines Device, Three Dimensional - Manual

3B SCIENTIFIC® PHYSICS
Elwe Didactic GmbH • Steinfelsstr. 5 • 08248 Klingenthal • Germany • www.elwedidactic.com
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com
Subject to technical amendments
© Copyright 2011 3B Scientific GmbH
Equipment for demonstrating magnetic field lines in 3D
U8491925
Instruction sheet
01/11 SP
1 Iron filings
2 Bar magnet (not included)
3 Bore opening
1. Description
The equipment is used to visually demonstrate the
magnetic field lines of a cylindrical bar magnet.
The plexiglass vessel with a hollow axial bore is
filled with iron filings in a special high-viscosity
fluid. After inserting the magnet, the iron filings,
hitherto uniformly distributed in the fluid, are
aligned according to the magnetic flux. A pocket of
air inside the body ensures that the iron filings can
once again be distributed evenly when the equip-
ment is shaken thoroughly.
2. Technical data
Dimensions: 140 x 140 x 120 mm 3
Axis diameter: 21 mm
Weight: 1.48 kg approx.
3. Accessories required
1 Cylindrical bar magnet U8495210
4. Experiment procedure
• Thoroughly shake the device.
Owing to the trapped pocket of air, the iron filings
are evenly distributed within the vessel.
• Insert the cylindrical bar magnet through the
centre of the hollow axis bore.
• Without changing the position of the magnet,
slowly turn the device till all the iron filings
have attached themselves around the magnet.
The field lines are demonstrated by the alignment
of the iron filings and can thus be clearly identi-
fied.