The magnetic field of the Earth Student activity Play

The magnetic field of the Earth Simulation Play

The magnetic field of the Earth Whiteboard exercise Play

The magnetic field of the Earth Whiteboard exercise Play

The magnetic field of the Earth Animation Play

The magnitude of the Lorentz force Animation Play

The momentum of a couple of forces Animation Play

The momentum of a couple of forces Whiteboard exercise Play

The momentum of a couple of forces Student activity Play

The movement of a charge in a magnetic field Whiteboard presentation Play

The movement of a charge in a magnetic field Class activity Play

The movement of a charge in an electric field Student activity Play

The movement of a charge in an electric field Whiteboard exercise Play

The mutuality of interactions Student activity Play

The National Grid system Illustration Play

The National Grid system Animation Play

The National Grid system Student activity Play

The National Grid system Whiteboard exercise Play

The operation of a tokamak Animation Play

The origin of spectral lines Animation Play

The path of a charge moving in an electric field Animation Play

The path of a charge moving perpendicular to the filed lines Animation Play

The potential of an electric field due to a point charge Animation Play

The reasons for the flow of induced current Animation Play

The relationship between potential and the gravitational field strength Whiteboard exercise Play