Repulsion between current-carrying conductors Animation Play

Resistance to disturbances Animation Play

Resting and action potentials of a neurone Student activity Play

Rotating plane-polarising light Animation Play

Satellite navigation systems Student activity Play

Satellite navigation systems Whiteboard exercise Play

Satellite telephony Slideshow Play

Satellite television Whiteboard exercise Play

Satellite television Slideshow Play

Satellite television Student activity Play

Sending information to the environment Student activity Play

Signal as an information carrier Animation Play

Signal encoding Class activity Play

Signal encoding Whiteboard presentation Play

Signals are not a language Slideshow Play

Soap bubble Animation Play

Sound encoding Animation Play

Spectroscopy and electromagnetic radiation Student activity Play

Spectroscopy and electromagnetic radiation Whiteboard exercise Play

Spectroscopy and quantisation of energy Animation Play

Spectrum of electromagnetic radiation Illustration Play

Spectrum of electromagnetic waves Whiteboard exercise Play

Spectrum of electromagnetic waves Illustration Play

Spectrum of electromagnetic waves Student activity Play

Standard solutions Student activity Play