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White Light


Mixture of many colours of light. If white light is passed through a prism, a band of colours called a spectrum is produced. This splitting of white light into its component colours is called dispersion. The order of the colours within the spectrum is always the same. A second inverted prism placed next to the first can be used to reverse the process, combining the coloured lights to make white light.

In 1666 Isaac Newton first proposed and demonstrated that white light was made up from a mixture of coloured lights.

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colour (physics)
concave lens
concave mirror
convex lens
convex mirror
diffraction
dispersion (physics)
eclipse
electromagnetic spectrum
electromagnetic waves
eye
filter (optics)
frequency (physics)
gamma radiation
hypermetropia
image (physics)
infrared radiation
lateral inversion
light
long-sightedness
microwave radiation
myopia
optical fibre
penumbra
prism (optics)
radio
radio wave
real image
reflection (physics)
refraction
shadow
short-sightedness
spectrum
speed of light
ultrasound
ultraviolet radiation
umbra
virtual image
vision
white light
X-ray

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