We've a good collection of rainbow pictures in the Weather gallery. They obviously have a special fascination for some of us!
I've just added a new one which
was almost a triple bow
Unfortunately I wasn't carrying my camera and one arc had gone and the other was fading by the time I found it (Trust me!
).
I've only ever seen a triple bow once (in Sheffield, we're good at rainbows up here). I suppose that the 'extra' arcs are due to a double diffraction of light from the initial one - the colours come out in reverse order to the primary rainbow. Anybody understand the physics?
