A light nanosecond Animation Play

A magnifying glass Animation Play

A magnifying glass Student activity Play

A magnifying glass Simulation Play

A microscope Student activity Play

A mirror and a light bulb Whiteboard exercise Play

A mirror and a light bulb Student activity Play

A refracting telescope Animation Play

A refracting telescope Student activity Play

A virtual image in a mirror Animation Play

Accommodation Animation Play

Adjusting sharpness Student activity Play

Adjusting sharpness Simulation Play

Adjusting sharpness Whiteboard exercise Play

An image in a mirror Student activity Play

An image in a mirror Simulation Play

An object brought closer to the focal point Animation Play

An object brought closer to the mirror Animation Play

Application of infrared light Slideshow Play

Arrangement of different objects Animation Play

Arrangement of indistinguishable objects Animation Play

Arrangements Student activity Play

Arrangements in boxes Student activity Play

Arrangements of the objects Animation Play

Arrangements of the objects Animation Play