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๐งฒ Magnetic Fields
Objective: Visualize magnetic fields produced by permanent magnets. Place north (๐ด) and south (๐ต) poles and observe field lines, iron filings, and compass needle behavior.
Controls: Select N or S tool and click to place. Drag poles to reposition. Toggle field lines on/off. Adjust iron filings count. Presets include bar magnet, horseshoe, repulsion, and more.
Physics: Magnetic field B at position r is calculated using the dipole model. Field lines trace from N to S. Iron filings align with local field direction. Compass needles point along field lines.