Search found 3 matches

by Dims
Mon Jan 12, 2009 3:46 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Unusual Light Pillars Over Latvia (2009 Jan 12)
Replies: 176
Views: 191184

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

The light starts reflecting where the water starts freezing. Ah, agree! The anisotropy can also disappeared due to melting, thats right! As the moisture completely freezes closer to the ground the ice crystals concentrate into the beam. And this can't be true. Why crystals are collected above light...
by Dims
Mon Jan 12, 2009 3:43 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Unusual Light Pillars Over Latvia (2009 Jan 12)
Replies: 176
Views: 191184

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

I think the mechanism is follows: 1) Why are pillars vertical? This because tiny pieces of ice are oriented! Most probably they are horizontal, falling like autumn leaves. 2) Hence, if the pillars are NOT vertical, the tiny ices are NOT oriented. Summarizing: we have calm atmospheric layer down near...
by Dims
Thu Aug 16, 2007 11:07 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Discussion of APOD 15 August 2007: Mysterious Streaks
Replies: 97
Views: 81780

One can see a light source just above the mountain. Also, some faint resemblance of light beam from this source is visible. And this beam is pointed directly to the strange streaks.

So, I think, that several birds could fly into and then out of the beam.