Dr Lisa Jardine-Wright Cavendish Laboratory University of Cambridge.

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Presentation transcript:

Dr Lisa Jardine-Wright Cavendish Laboratory University of Cambridge

What does this say when you look through the red filter and read?

What does this say when you now look through the red filter and read?

Red FilterGreen FilterBlue Filter

Red Green Blue

 Light can be emitted by objects.

 Light can be reflected by an object.

 Light is blocked…

 Light is blocked... in some wavelengths but not others.

 Light is blocked... in some wavelengths but not others.

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