This video demonstrates how the human eye will average or blend fast-flashing red, green and blue lights to produce violet light.  However, if a ball containing the red, green and blue lights are spun the individual lights are clearly visible.  This is because the eye will not merge the separate colours if they...

Produced by the National STEM Learning Centre and the Institute of Physics, this video demonstrates how to use a gold-leaf electroscope, zinc plate and an ultraviolet light source. The zinc plate is placed onto the top of the electroscope and it is given a negative charge.

The electroscope can be discharged...

This video, from the Institute of Physics (IOP), shows medical scientists at work using a variety of sophisticated devices which use principles of physics to investigate what is happening inside the body.

The video is presented as a whole but for ease of use, the following sections are available at the...

This video explores the fate of the universe from an historical position. It explains how the rate of expansion of the universe can be measured.

This resource uses the context of fencing to make a simple electric circuit. Students make an epee sword out of a smarties tube and incorporate a buzzer that should sound when the button on the end of the smarties tube is pressed. Students are encouraged investigate how they could change the volume of the buzzer or...