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- Mon Jan 12, 2009 10:14 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Unusual Light Pillars Over Latvia (2009 Jan 12)
- Replies: 176
- Views: 185894
Re: Unusual Light Pillars Over Latvia (2009 January 12)
It seems that the dispersion occurs at the same height above ground (regardless of the light colour!) which suggests a strong temperature inversion at this height. Refraction, or bending, of the light beams due to the air temperature/density changing suddenly is my suggestion. Whatever the cause it ...