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2. Circumzenithal arc - Wikipedia

   en.wikipedia.org/wiki/Circumzenithal_arc

   A circumzenithal arc in Salem, Massachusetts, Oct 27, 2012. Also visible are a supralateral arc, Parry arc (upper suncave), and upper tangent arc.. The circumzenithal arc, also called the circumzenith arc (CZA), the upside-down rainbow, and the Bravais arc, [1] is an optical phenomenon similar in appearance to a rainbow, but belonging to the family of halos arising from refraction of sunlight ...

3. Cloud iridescence - Wikipedia

   en.wikipedia.org/wiki/Cloud_iridescence

   Iridescent mid altitude clouds Iridescent polar stratospheric cloud at sunset over Aberdeen, Scotland Cloud iridescence, seen above the clouds covered with grey clouds, Pondicherry, India. Cloud iridescence or irisation is a colorful optical phenomenon that occurs in a cloud and appears in the general proximity of the Sun or Moon.

4. Atmospheric optics - Wikipedia

   en.wikipedia.org/wiki/Atmospheric_optics

   A rainbow is a narrow, multicoloured semicircular arc due to dispersion of white light by a multitude of drops of water, usually in the form of rain, when they are illuminated by sunlight. Hence, when conditions are right, a rainbow always appears in the section of sky directly opposite the Sun.

5. Incredible rainbow cloud spotted in China [Video] - AOL

   www.aol.com/lifestyle/incredible-rainbow-cloud...

   A stunning rainbow cloud lights up the sky in Southern China. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in ...

6. Circumhorizontal arc - Wikipedia

   en.wikipedia.org/wiki/Circumhorizontal_arc

   A circumhorizontal arc is an optical phenomenon that belongs to the family of ice halos formed by the refraction of sunlight or moonlight in plate-shaped ice crystals suspended in the atmosphere, typically in actual cirrus or cirrostratus clouds. In its full form, the arc has the appearance of a large, brightly spectrum-coloured band (red being ...

7. Rare 'rainbow clouds' spotted across Yorkshire - AOL

   www.aol.com/news/rare-rainbow-clouds-spotted...

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8. ‘Rainbow’ clouds amaze onlookers in China [Video] - AOL

   www.aol.com/rainbow-clouds-amaze-onlookers-china...

   In an incredible weather phenomenon, these colorful clouds were seen in the sky above southern China. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800 ...

9. Rainbow - Wikipedia

   en.wikipedia.org/wiki/Rainbow

   The sky inside a primary rainbow is brighter than the sky outside of the bow. This is because each raindrop is a sphere and it scatters light over an entire circular disc in the sky. The radius of the disc depends on the wavelength of light, with red light being scattered over a larger angle than blue light.