A beam of light in a rocket Animation Play

A change in the intensity of X-radiation Whiteboard exercise Play

A moving ray Animation Play

A ray of laser light Animation Play

A ray of light Student activity Play

A ray of light Whiteboard exercise Play

Absorbed dose and dose equivalent Student activity Play

Alpha, beta and gamma radiation Animation Play

An angle and points on the circle Whiteboard exercise Play

An angle and points on the circle Student activity Play

An angle as a rotation Whiteboard exercise Play

An angle as a rotation Student activity Play

An image formed by a concave mirror Animation Play

An image in a mirror Simulation Play

An image in a mirror Student activity Play

An object brought closer to the focal point Animation Play

An object brought closer to the mirror Animation Play

Analysis of photographs Slideshow Play

Annihilation Animation Play

Annihilation and creation Animation Play

Annihilation and creation Whiteboard exercise Play

Annihilation and creation Student activity Play

Application of convex mirrors Slideshow Play

Application of polarisation filters Whiteboard exercise Play

Application of polarisation filters Student activity Play