Refracting telescope Student activity Play

Refracting telescope Animation Play

Refraction of light Student activity Play

Refraction of plane waves Student activity Play

Refraction of plane waves Animation Play

Refraction of plane waves Simulation Play

Relationship between the wavelength and the energy of an electromagnetic wave Animation Play

Resonance Student activity Play

Resonance Student activity Play

Resonance Animation Play

Satellite navigation systems Student activity Play

Satellite telephony Slideshow Play

Satellite television Student activity Play

Satellite television Slideshow Play

Seismic waves Class activity Play

Seismic waves Whiteboard presentation Play

Seismic waves Animation Play

Seismic waves Student activity Play

Seismic waves and the inside of the Earth Student activity Play

Seismic waves and the inside of the Earth Whiteboard exercise Play

Sight defects Simulation Play

Sight defects Student activity Play

Singing Student activity Play

Singing Simulation Play

Singing Whiteboard exercise Play