Physics - Wave Nature of Light

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Christiaan was the first to propose that light has a nature. It was later shown that light could be reflected, refracted, diffracted and also showed patterns. Thomas was able to show that light underwent diffraction and interference with his Youngs Slits .
The wavelength of light can be measured using a diffraction . The grating constant is the distance between two adjacent on the diffraction grating.
Light is a wave which can be polarised to vibrate in one only.
Dispersion is the breaking up of white light into its colours. The primary colours are red, green and . Two primary colours mix to give a colour. The secondary colours are cyan, magenta and . When a primary and secondary colour mix to give white, they are called colours.
The spectrum is a collection of waves of different energies ranging from radio waves to waves.