Teaching Minds-On Experiments on Electromagnetism in Secondary Schools

Scientific coordinator: University Nicolaus Copernicus ToruĊ„

Coordinator: Prof. Grzegorz Karwasz; Low-tech Kit: Dr Andrzej Karbowski

List of experiments

1.    Conduction of different materials
1.1.    Traditional ones
1.2.    In liquids
1.3.    In gases = plasma’s

2.    Conduction and temperature

2.1.    R-T C-pencil
2.2.    flame + PTC
2.3.    flame + NTC
2.4.    R-T bulb
2.5.    R-T LED
2.6.    R-T “normal” R

3.    Permanent magnets
3.1.    Chaotic magnetic pendulum
3.2.    Magnetic construction sticks and balls
3.3.    Set of toy magnets (illustrating multipoles) + fluxdetector
3.4.    Magnetic dog
3.5.    Atomic force microscope model
3.6.    Tile of magnets
3.6.1.    Tile of 5 magnetic rings around a stick
3.6.2.    Tile of 5 magnetic rings in a tube
3.6.3.    Tile of many magnetic rings in a tube
3.7.    Magnets floating on water
3.8.    Attracting force: measurement with springs
3.9.    Repelling force: measurement based on gravity
3.10.    Measurement of component of magnetic field
3.11.    Study of magnetic field with filings
3.12.    “Ski jumping” in a magnetic field
3.13.    Glass probe filled with iron filings
3.14.    Polystyrene with needle on the surface of water
3.15.    Series of needles hanging above a magnet

4.    Magnetism in different materials: permeability (ferro, para, diamagnetism)
4.1.    Pyrolitic graphite on top of magnetic
4.2.    The water- CuSO4 balance
4.3.    Pyrolitic graphite
4.4.    The pencil that is afraid of a magnet
4.5.    Floating magnet (Cu-Cu with magnet in between)
4.6.    Magnetic fields in matter (objectual models)
4.7.    Magnetic shielding (mu-metal)
4.8.    Clips on Al, Cu, Steel sheet with magnet below

5.    Magnetism and temperature
5.1.    Curie temperature (1)
5.2.    Curietemperature (2)
5.3.    Reduced strength if temperature rises

6.    Electromagnetism
6.1.    Oersted’s experiment – vertical version
6.2.    Oersted’s experiment – horizontal version
6.3.    Field around a bundle of wires
6.4.    Field in the centre of a coil
6.5.    Field in the centre of a solenoid
6.6.    Interaction between a coil and a magnet
6.7.    Interaction between a coil and a magnet: Different number of windings
6.8.    Interaction between 2 coils
6.9.    Electromagnetic nail
6.10.  Iron core (big nail) vertically attracted inside a coil

7.    Lorentz force
7.1.    Pohl experiment, Torun version
7.2.    Pohl experiment, Brno version, oscillations
7.3.    Turning coil between magnets
7.4.    Turning salty water
7.5.    One loop motor, Antwerp version
7.6.    One loop motor, Brno version
7.7.    Homopolar motor
7.8.    30 seconds motor

8.    Induction (conceptual understanding)
8.1.    Lazy pendulum
8.2.    Electromagnetic brake
8.3.    The drunken magnet
8.4.    The sliding magnet
8.5.    The unwilling magnet
8.6.    The flashing LED
8.7.    Magnetic induction with iron and steel ball (Brno)
8.8.    Falling piece of magnet/metal/plastic in tube of copper/plastic/aluminium with/without slit(s)
8.9.    Jumping rings (copper, aluminium, plastic)

K. Sluzewski and A. Karbowski