White light corona and those from narrow
band radiation. IRIS
simulations. Mouse over the spectrum to see the composition
of the white light corona.
are iridescent, redolent of soap bubbles and peacock tails.
A corona's size in any single colour is proportional to the light
wavelength. The red corona is almost twice as large as the extreme
In the white light corona all the coronas of the individual spectral
colours are superimposed.
Operate the animation to see that almost nowhere are there any single
spectral colours, they are instead mixtures of several. Most interference
colours are like this.
The aureole centre is nearly white. Its edge is fringed yellow and
red because it extends furthest in these colours.
The first ring's blue-violet inner edge is made of extreme violet
to blue with just a little green.
The greens at each
ring centre are subdued where blue to orange all mix. The outer
red is tinged with next ring's violet.