Bar magnet and equivalent solenoid
A bar magnet and a small current loop with the same dipole moment have the same far field. Field lines form closed loops; an isolated magnetic pole is absent from this model.
Run this experiment →Physics · Class 12
Magnetism & Matter
4 free physics experiments and lesson notes for Magnetism & Matter, with model limits, worked examples and Tamil explanations.
Magnetic dipole fields and torque
Axial field magnitude is twice the equatorial magnitude at equal radius. A separate uniform external field rotates the magnet toward its minimum-energy alignment.
Run this experiment →Dia, para and ferromagnetism
Diamagnetic susceptibility is weak and negative; paramagnetic susceptibility is weak and positive. Ferromagnetism can be much stronger and nonlinear; this lesson uses an explicitly simplified temperature-dependent linear response.
Run this experiment →Magnetization and temperature
Higher temperature disrupts alignment. Paramagnetic χ follows a Curie law here; the illustrative ferromagnetic response loses its strong ordering above the chosen Curie temperature.
Run this experiment →