Rainbow | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-03

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Rainbow


00:00:58 1 Overview
00:02:23 2 Visibility
00:04:49 3 Number of colours in spectrum or rainbow
00:07:45 4 Explanation
00:11:30 4.1 Mathematical derivation
00:12:03 5 Variations
00:12:20 5.1 Double rainbows
00:13:30 5.2 Twinned rainbow
00:13:39 5.3 Full-circle rainbow
00:15:02 5.4 Supernumerary rainbows
00:16:36 5.5 Reflected rainbow, reflection rainbow
00:18:12 5.6 Monochrome rainbow
00:20:02 5.7 Higher-order rainbows
00:21:29 5.8 Rainbows under moonlight
00:21:53 5.9 Fogbow
00:23:57 5.10 Circumhorizontal and circumzenithal arcs
00:24:40 5.11 Rainbows on Titan
00:25:38 5.12 Rainbows with different materials
00:27:00 6 Scientific history
00:27:35 7 Experiments
00:29:08 8 Culture
00:36:51 9 See also
00:38:17 10 Notes
00:39:57 11 References



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Voice name: en-AU-Wavenet-B


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SUMMARY
=======
A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun.
Rainbows can be full circles. However, the observer normally sees only an arc formed by illuminated droplets above the ground, and centered on a line from the sun to the observer's eye.
In a primary rainbow, the arc shows red on the outer part and violet on the inner side. This rainbow is caused by light being refracted when entering a droplet of water, then reflected inside on the back of the droplet and refracted again when leaving it.
In a double rainbow, a second arc is seen outside the primary arc, and has the order of its colours reversed, with red on the inner side of the arc. This is caused by the light being reflected twice on the inside of the droplet before leaving it.