The colour spectrum

It is very interesting that there is a huge spectrum range of waves however we only see a small percentage of this spectrum known as the 'visible spectrum'. Even more interesting is that some creatures can see this spectrum such as bees and butterflies only see in ultraviolet and flowers will purposely appeal to the bees vision which can be seen under ultraviolet light.

The visible spectrum that we can see is known as monochramatic light, the pure spectral colours. The spectrum is continuous with no defined point between one colour and the next.

There is a study based on the colours that objects emit known as Spectroscopy. Helium was first detected by analysing the spectrum of the sun.

Any screens that display colour show a mix of red, green and blue to create colours that are within their own colour triangles. So they only roughly approximate representing spectral colours .
If there are any colours outside of the displays limit then it will produce a negative colour.