Thomson Crossed Fields Simulation

What you'll learn

• How a beam of electrons interacts dynamically with uniform magnetic and electric fields.
• The condition required to attain balanced, undeflected linear momentum: eE = evB
• How to empirically calculate specific charge by measuring exact geometric curvature.

How to use it

1. Scale up the Accelerating Voltage to establish a high-kinetic electron beam.
2. Apply deflection potentials to perturb the trajectory geometrically.
3. Tweak the magnetic field coils manually to completely eliminate structural deflection until the beam strikes the center target.
4. Click "Record Trial" to graph the proportional variance dynamically.

Notes

This simulation uses true 4th-order physical numerical integration, meaning the resultant paths are calculated empirically instead of keyframed. It targets the AQA Turning Points syllabus precision standards.