I can see a rainbow...
Post categories: weather
| 12:35 UK time, Thursday, 26 November 2009
We've had some lovely rainbows over Cardiff lately. I keep seeing them out of the window opposite ³ÉÈË¿ìÊÖ Wales HQ here in Llandaff.
This one appeared at around 10.30am and was joined by another one.
Our guru - Geoff Rogers snapped this one:
Someone mentioned that there was a special name for this occurrence so I turned to good old which said:
"Secondary rainbows are caused by a double reflection of sunlight inside the raindrops, and appear at an angle of 50°-53°.
As a result of the second reflection, the colours of a secondary rainbow are inverted compared to the primary bow, with blue on the outside and red on the inside.
The dark area of unlit sky lying between the primary and secondary bows is called , after who first described it."
So there we have it - Alexander's band in action and all before my second cup of tea...
Gull
This one appeared at around 10.30am and was joined by another one.
Our guru - Geoff Rogers snapped this one:
Someone mentioned that there was a special name for this occurrence so I turned to good old which said:
"Secondary rainbows are caused by a double reflection of sunlight inside the raindrops, and appear at an angle of 50°-53°.
As a result of the second reflection, the colours of a secondary rainbow are inverted compared to the primary bow, with blue on the outside and red on the inside.
The dark area of unlit sky lying between the primary and secondary bows is called , after who first described it."
So there we have it - Alexander's band in action and all before my second cup of tea...
Gull
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