Lines of Force

Magnetic field explorer

The sheet is empty. Add a magnet to see its field.

Fig. 1A single bar magnet, shown with iron filings.

View

Presets

Magnets 1 on sheet

Bar magnet 10°

Strength1.00×

Notes

Model: each pole is a small cluster of magnetic “charges” with an inverse-square field (the Gilbert model). Faithful outside the magnets; field strengths are in arbitrary units.

Handling

drag
move a magnet, or the ring handle to rotate it
wheel R
rotate (Shift+R turns the other way)
double-click F
flip north and south
←↑↓→
nudge the selected magnet
[ ]
select another magnet
Del A
remove / add a magnet