An Etymological Dictionary of Astronomy and Astrophysics

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rainbow angle

زاویه‌ی ِ رنگین‌کمان

zâviye-ye rangin-kamân

Fr.: angle d'arc-en-ciel

The → obtuse angle between sunlight and the → line of sight. Rainbow angle = 180° minus → scattering angle. For the → primary rainbow it is 138°, and for the → secondary rainbow 130°.

→ rainbow; → angle.

An Etymological Dictionary of Astronomy and Astrophysics
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