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Astronomy Picture of the Day -- A Circumhorizontal Arc Over Ohio
| May 24, 2014
| (see photo credit)
Posted on 05/23/2014 9:51:32 PM PDT by SunkenCiv
Explanation: Why would clouds appear to be different colors? The reason here is that ice crystals in distant cirrus clouds are acting like little floating prisms. Sometimes known as a fire rainbow for its flame-like appearance, a circumhorizon arc lies parallel to the horizon. For a circumhorizontal arc to be visible, the Sun must be at least 58 degrees high in a sky where cirrus clouds are present. Furthermore, the numerous, flat, hexagonal ice-crystals that compose the cirrus cloud must be aligned horizontally to properly refract sunlight in a collectively similar manner. Therefore, circumhorizontal arcs are quite unusual to see. This circumhorizon display was photographed through a polarized lens above Dublin, Ohio in 2009.
(Excerpt) Read more at 22.214.171.124 ...
TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; science
[Credit & Copyright: Todd Sladoje]
posted on 05/23/2014 9:51:32 PM PDT
To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; steelyourfaith; Mmogamer; dayglored; ...
posted on 05/23/2014 9:51:49 PM PDT
From my backyard, Spokane WA circa 2009. No polarized filters.
posted on 05/23/2014 11:34:04 PM PDT
(Je t'aime, faire du bruit comme le cochon.)
BTW: I was wondering if there was a pot-o gold at the end of that rainbow? < /humor >
posted on 05/24/2014 4:56:39 AM PDT
by Las Vegas Dave
(The democRATic party preys on the ignorant..!)
posted on 05/24/2014 9:51:22 AM PDT
(Department of Homeland Security, Certified - "Right Wing Extremist")
Each one of your photos is better than the APOD photo. Thanks for posting them.
To: Las Vegas Dave
That only happens in Colorado. ;’)
posted on 05/24/2014 1:13:08 PM PDT
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