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circumhorizontal arc
(redirected from Circumhorizon arc)

    Also found in: Wikipedia 0.01 sec.
circumhorizontal arc [¦sər·kəm‚här·ə′zänt·əl ′ärk]
(optics)
A halo phenomenon consisting of a colored arc, red on its upper margin; it extends for about 90° parallel to the horizon and lies about 46° below the sun.
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Rather, it was a rare phenomenon called a circumhorizon arc.
Skylight by Thompson, Andrea / Science World
The rare and beautiful sight is a weather phenomenon called a circumhorizon arc.
WHAT AN ICE RAINBOW! by The Mirror (London, England)
 
 
 
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