Moonbows

Tuesday 11 August 2009, 15:42

Derek Brockway Derek Brockway

They are called moonbows and are formed by light from the moon shining through a shower of rain.

Like a normal rainbow, the light is split up into the colours of the light spectrum and bounced off the rain drop but because moon light is about 400,000 times weaker than sunlight, moonbows are much fainter.

To see one, the moon must be in clear sky behind you. The water droplets must be in front of you and it must be dark enough.

The best moonbows tend to occur when there is a full moon but unless you're away from street lights they maybe difficult to see. Quite often the colours are so pale that moon bows look ghostly white.

The next time there is full moon and showers are forecast at night who knows you may be lucky and see a moonbow.

Derek Brockway

Comments

Be the first to comment

This entry is now closed for comments

Share this page

More Posts

Previous
Mink vs rabbit

Tuesday 11 August 2009, 14:04

Next
Perseid meteor shower

Wednesday 12 August 2009, 15:19

About this Blog

Behind the scenes on our biggest shows, the stories you won't see on TV & highlights from Welsh history, arts and music.

Follow us on Twitter & Facebook for the latest posts.

Blog Updates

Stay updated with the latest posts from the blog.

Subscribe using:

What are feeds?

BBC Wales tweets