Recycling of steel Slideshow Play

Reflection of light at a smooth surface Animation Play

Reflection of plane waves Student activity Play

Reflection of plane waves Animation Play

Reflectors Whiteboard exercise Play

Reflectors Student activity Play

Refraction of light Student activity Play

Relationship between gas volume and pressure Animation Play

Relationship between Kp and Kc Student activity Play

Relationships between voltage and current Animation Play

Relative abundance of isotopes and mass spectra Student activity Play

Renewable and non-renewable sources of energy Student activity Play

Renewable energy resources Student activity Play

Resistance Glossary Play

Resistance Student activity Play

Resistors Whiteboard presentation Play

Resistors Class activity Play

Reversibility of the Carnot cycle Animation Play

Reversibility of the Carnot cycle Animation Play

Reversibility of the Carnot cycle Whiteboard exercise Play

Reversibility of the Carnot cycle Student activity Play

Reversible and irreversible processes Animation Play

Reversible and irreversible processes Animation Play

Reversible and irreversible processes Illustration Play

Reversible and irreversible processes Illustration Play