zorg.ch
6:21 Uhr
Events
Forum
Games
Wetten
Rezepte
Tauschbörse
Books
Space
User
Übersicht
Astronomy Picture of the Day
A Sun Pillar Over North Carolina
Bild Note: 5
(1 Vote)
⏴ previous
Bild Upload von 18.02.2016 21:42
next ⏵
zorg.ch
#108940
by
[z]Barbara Harris
@
16.12.2008 00:00
- nach oben -
A Sun Pillar Over North Carolina
Explanation: Have you ever seen a
sun pillar
? When the air is cold and the Sun is rising or
setting
, falling ice
crystals
can reflect sunlight and create an
unusual
column of light. Ice sometimes forms flat, six-sided
shaped crystals
as it falls from high-level
clouds
.
Air resistance
causes these crystals to lie nearly flat much of the time as they flutter to the ground. Sunlight reflects off crystals that are
properly aligned
, creating the
sun-pillar
effect. In the
above picture
taken in 2007 January, a
sun-pillar
reflects light from a Sun setting over
Lake Norman
,
North Carolina
,
USA
. Note :
APOD Editor to Speak in New York on Jan. 2
digg_url = 'http://apod.nasa.gov/apod/ap081215.html'; digg_skin = 'compact';
Credit & Copyright