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by wbowman
Wed Aug 05, 2009 6:18 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: A Triple Sunrise Over Gdansk Bay (2009 Aug 04)
Replies: 338
Views: 55626

Re: Cause of Triple Sunrise (APOD 2009 August 4)

Perhaps horizontal atmospheric lensing is caused by the tilt of the earth at northern latitudes. I'll bet that it doesn't occur at the equator. The vertical images suggest a thermal inversion.