Rainbow - meaning and definition. What is Rainbow
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What (who) is Rainbow - definition

METEOROLOGICAL PHENOMENON CAUSED BY REFLECTION, REFRACTION AND DISPERSION OF LIGHT IN WATER DROPLETS
Colors of the rainbow; Double rainbow; Rainbow colour; Snowbow; RAINBOW; Secondary rainbow; Rainbows; Supernumerary rainbow; Colors of rainbow; Water lens; 🌈; Primary rainbow; Stacker rainbow; Reflection rainbow; Reflected rainbow; Reflected-sunlight rainbow; Tertiary rainbow; Quaternary rainbow; Twinned rainbow; Axis of the rainbow; Sleetbow; Rain bow
  • A circumhorizontal arc (bottom), below a [[circumscribed halo]]
  • The primary rainbow is "twinned."
  • Circular rainbow
  • Circumzenithal arc
  • René Descartes's sketch of how primary and secondary rainbows are formed
  • Double rainbow and supernumerary rainbows on the inside of the primary arc. The shadow of the photographer's head on the bottom marks the centre of the rainbow circle ([[antisolar point]]).
  • A first order rainbow from water (left) and a sugar solution (right).
  • Fogbow and glory.
  • Depiction of the rainbow in the [[Book of Genesis]]
  • Unenhanced photo of a red (monochrome) rainbow
  • Yosemite Fall]]
  • Rainbow (middle: real, bottom: computed) compared to true spectrum (top): unsaturated colours and different colour profile
  • Reflected rainbow
  • A rainbow in [[Tokyo]], 2021
  • Mathematical derivation
  • Reflection rainbow (top) and normal rainbow (bottom) at sunset
  • supernumerary bows]] inside the primary bow.
  • Round bottom flask rainbow demonstration experiment - Johnson 1882
  • Monochrome sleetbow captured during the early morning on January 7, 2016 in Valparaiso, Indiana.
  • Eruption of [[Castle Geyser]], [[Yellowstone National Park]], with double rainbow seen in the mist
  • High dynamic range]] photograph of a rainbow with additional supernumerary bands inside the primary bow
  • Image of the end of a rainbow at [[Jasper National Park]]

Rainbow         
·noun A bow or arch exhibiting, in concentric bands, the several colors of the spectrum, and formed in the part of the hemisphere opposite to the sun by the refraction and reflection of the sun's rays in drops of falling rain.
rainbow         
¦ noun
1. an arch of colours visible in the sky, caused by the refraction and dispersion of the sun's light by water droplets in the atmosphere.
2. a wide range of things of different colours or kinds.
Origin
OE regnboga (see rain, bow1).
rainbow         
(rainbows)
A rainbow is an arch of different colours that you can sometimes see in the sky when it is raining.
...silk brocade of every colour of the rainbow.
N-COUNT

Wikipedia

Rainbow

A rainbow is an optical phenomenon that can occur under certain meteorological conditions. It is caused by reflection, refraction and dispersion of light in water droplets resulting in an effect similar to 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.

Examples of use of Rainbow
1. Connie Talbot‘s album, Over The Rainbow, is released on November 26 on Rainbow Recording Company label, and her single, Over The Rainbow/White Christmas, on December 3.
2. Today, the sunken ship‘s replacement, Rainbow Warrior II, will visit New Zealand‘s Matauri Bay, where the original Rainbow Warrior was scuttled after being refloated during an investigation.
3. In a normal rainbow the sun is behind the observer, and the shadow of the observer falls at the exact centre of the rainbow.
4. On Sunday, the sunken ship‘s replacement, Rainbow Warrior II, will visit New Zealand‘s Matauri Bay, where the original Rainbow Warrior was scuttled after being refloated during an investigation.
5. Rainbow Warrior On Tuesday and Wednesday, Athenians will be able to visit Greenpeace‘s Rainbow Warrior ship, which will be docked at Zea Marina in Piraeus.