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by surface.form
Mon Jan 12, 2009 8:25 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Unusual Light Pillars Over Latvia (2009 Jan 12)
Replies: 176
Views: 191484

Re: Unusual Light Pillars Over Latvia (2009 January 12)

It looks to me like the ice crystals behave like any other fog, maintaining a fairly consistent density up to a certain height. At the top of the fog, the density of the fog (as well as the ability of its ice crystals to focus light) decreases according to a curve represented by the shape of the lig...