Sources of Light

LIGHT ! from bonfires to lasers

Sources of light ,[object Object],A bonfire

Stars ,[object Object],Picture: Liverpool Telescope

A worm living in dark caves sends out light from its tail. ,[object Object],tail of worm

Some cold things give out light: ,[object Object],[object Object],[object Object],[object Object],[object Object]

How do we see light sources? ,[object Object],[object Object]

Can we see in the dark? ,[object Object],[object Object],[object Object],[object Object]

How do we see things that are not sources of light? ,[object Object],[object Object]

On the look out ! ,[object Object]

Reflection ,[object Object],[object Object],[object Object],[object Object],[object Object]

Shiny surfaces ,[object Object],mirror wall

Move the mirror ,[object Object],wall

Look in a mirror ,[object Object],[object Object]

Change the direction of the light beam ,[object Object],[object Object],[object Object],[object Object]

Multiple reflections ,[object Object],[object Object]

Sunlight shining on CDs ,[object Object]

Rainbow ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Colours from white light ,[object Object],[object Object]

Adding colours with light ,[object Object]

Blue + Green ,[object Object]

Green + Red ,[object Object]

Uses ,[object Object],[object Object],[object Object],[object Object]

CDs ,[object Object],[object Object],[object Object],[object Object],[object Object],spiral

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