Under what circumstances can you see a white rainbow?

yumchicken

The only colors you can see in a rainbow are Red, Green,Vilet,Blue,yello,and I can't think of the other colors right off hand. No white rainbow I beleive. Jul 16 06, 6:48 PM

peasypod

When it is a 'fogbow', of course. Here is a picture: http://www.geocities.com/bowlturner/fogbows.html Jul 16 06, 6:51 PM

beaniegirl61

The colors of the rainbow are in order, Red, Orange, Yellow, Green, Blue, Indigo and Violet, mnemonically referred to to as Roy G. Biv Jul 17 06, 6:17 AM

peasypod

Yes, but that has no bearing whatsoever on the question, which has been answered. ;) Jul 17 06, 6:25 AM

Gnomon

A moon rainbow will be perceived as white because it is so faint that the eye's colour receptors will be turned off. Jul 17 06, 6:33 AM

darkpresence

Those fogbow pictures are excellent peasy, I knew the process that makes them white but hadn't heard of them occuring in fog. Gnomon got the moonbow, the other white rainbow I was looking for. http://www.sundog.clara.co.uk/rainbows/moonbow.htm I learned that mnemonic as Richard Of York Gave Battle In Vain, and I'm posting a follow up question about indigo. Jul 17 06, 3:46 PM