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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged.

Unusual rainbow?



 
 
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  #1  
Old July 6th 05, 09:48 AM posted to uk.sci.weather
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Default Unusual rainbow?

Droitwich, Tuesday evening. Just before sunset we had a very bright double
rainbow. Immediately below the ROYGBIV (top-bottom) part of the main inner
rainbow was a repetition of the ROYGBIV, although fainter and compressed,
and within that, yet another ROYGBIV sequence, yet fainter still. Any
thoughts as to why there were these two fainter innder rainbows?

Chris


  #2  
Old July 6th 05, 10:23 AM posted to uk.sci.weather
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Default Unusual rainbow?

On Wed, 6 Jul 2005 10:48:40 +0100, "Chris Kidd" wrote:

Droitwich, Tuesday evening. Just before sunset we had a very bright double
rainbow. Immediately below the ROYGBIV (top-bottom) part of the main inner
rainbow was a repetition of the ROYGBIV, although fainter and compressed,
and within that, yet another ROYGBIV sequence, yet fainter still. Any
thoughts as to why there were these two fainter innder rainbows?


Supernumerary rainbows, due to interference.

Useless fact no 1. Did you know that the inside of the rainbow is a magnified
image of the sun, hence the reason it is brighter than the outside. I read it
on Wikipedia so it must be correct ;-)

Martin


Chris





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