About this Simulation

This interactive simulation models a Wien (E×B) filter, demonstrating how perpendicular electric and magnetic fields work together to select particles by velocity. Learners can adjust field parameters and observe how charged particles respond, exploring the balance between electric and magnetic forces that enables velocity selection in mass spectrometry and particle physics.

Learning objectives: Understand how E×B fields create a velocity selector through force balance | Investigate the relationship between electric field strength, magnetic field strength, and particle velocity | Apply vector cross products to predict particle trajectories in combined fields