Reflection of light Student activity Play

Reflection of light Whiteboard exercise Play

Reflection of light at a smooth surface Animation Play

Reflection of plane waves Animation Play

Reflection of plane waves Student activity Play

Refracting telescope Student activity Play

Refraction Class activity Play

Relationship between the force of friction and the roughness of a surface Animation Play

Relationship between the force of friction and the surface area Animation Play

Satellite telephones Student activity Play

Sections of a cube Whiteboard exercise Play

Sections of a cube Student activity Play

Seismic waves Student activity Play

Seismic waves Slideshow Play

Shooting stars Animation Play

Silver halides in photography Student activity Play

Solid substances as catalysts in reactions in the gaseous phase Animation Play

Speed of light in transparent materials Illustration Play

Sphere Student activity Play

Spherical mirror Animation Play

Spherical mirrors Student activity Play

Spherical mirrors Animation Play

Spherical mirrors Class activity Play

Spherical mirrors Whiteboard presentation Play

Spherical mirrors Class activity Play