Light, Sound and Waves

Big Idea: Waves carry information without causing a permanent change on the intervening medium. More info...

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Diffraction of laser light

Class demonstration: This demonstration shows that a beam of light is diffracted as it passes around a wire, highlighting the...

Practical Activity 14-16

Demonstration: To show that a laser beam can easily be modulated to carry information.

Practical Activity 14-16

Demonstration: This can be shown to a sixth form class as a fun demonstration of light interference.

Practical Activity 14-16

This demonstration shows that a beam of light is diffracted as it passes around a wire, highlighting the wave nature of light.

Practical Activity 16-19