About this Simulation

This simulator visualizes the invisible magnetic field surrounding a bar magnet through dynamic field lines and compass needle responses. Learners can adjust magnet size, field range, line density, and stroke thickness to explore how magnetic fields behave in space and interact with compasses at different positions.

Learning objectives: Understand the spatial pattern and strength of magnetic fields around a bar magnet | Observe how compass needles respond to magnetic forces at various locations | Investigate the relationship between magnet properties and field characteristics