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CITE
We have made every effort to follow citation style rules, but there may be some minor differences. If in doubt, please refer to the appropriate citation style manual.
Colour. (2013). In Q-files Encyclopedia, Science, Energy. Retrieved from
https://www.q-files.com/science/energy/colour/
"Colour." Science, Energy, Q-files Encyclopedia, 2 Oct. 2013.
https://www.q-files.com/science/energy/colour/.
Accessed 12 Dec. 2019.
Colour 2013. Science, Energy. Retrieved 12 December 2019, from
https://www.q-files.com/science/energy/colour/
Science, Energy, s.v. "Colour," accessed December 12, 2019.
https://www.q-files.com/science/energy/colour/

Colour
Colour spectrum
Sunlight is not colourless, but is made up of all the colours of the rainbow: the spectrum of light. We see these colours when a rainbow forms. In fact, only three, red, green and blue (called primary colours), are needed for our eyes to see every colour there is. Many different colours can be made by mixing together primary colours in different amounts.
A prism splits light into its component colours.
Using a prism
The different colours of light can be seen when white light is split up using a prism, an angled block of transparent material such as clear glass or plastic. As the light waves pass into and then out of the prism they are bent or refracted. Longer waves of red light refract least. Shorter waves of violet light refract most. The other colours, orange, yellow, green and blue, are spread out between them.
A raindrop works as a natural, tear-shaped prism. Millions of raindrops split sunlight and form a rainbow in the sky.Raindrops split sunlight, creating a rainbow.


Only three colours, red, green and blue (called primary colours), mixed together are needed for our eyes to see every colour there is.

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