List the colors of white light in the order of decreasing energy

Dispersion of white light and the colours of the visible spectrum

White light can be split up to form a spectrumRefers to the visible spectrum, the range of the electromagnetic spectrum visible to the human eye.

White light color

It can be seen when white light is split by a prism, or by raindrops to form a rainbow. using a prismA block of glass or other transparent material that disperses light to form a spectrum..

This is a block of glass with a triangular cross section.

Light waves are refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ray changes direction when refracted by a lens.

as they enter the glass because they are slowed down.

The spectrum is produced because different colours of light travel at different speeds in glass.

Red light is slowed down least by glass and is refracted least.

Violet light is slowed down most by glass and is refracted most.

As a result, the coloured light spreads out to form

how does the white light produced in the tube

how does white light produce colors