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单词 airglow
释义

airglow

[ air-gloh ]
/ ˈɛərˌgloʊ /

noun

a dim light from the upper atmosphere caused by emissions from atoms and molecules ionized by solar radiation: observed at night (nightglow ), during the day (dayglow ), and at twilight (twilight glow ), with each having slightly different characteristics.

Origin of airglow

First recorded in 1950–55; air1 + glow

Words nearby airglow

air freshener, air frost, air gap, air gas, air gauge, airglow, air guitar, air gun, air hammer, air harbor, air-hardening
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for airglow

airglow
/ (ˈɛəˌɡləʊ) /

noun

the faint light from the upper atmosphere in the night sky, esp in low latitudes
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for airglow

airglow
[ ârglō′ ]

A faint photochemical luminescence in the upper atmosphere caused by the collision of x-rays and charged particles from the Sun with atoms and molecules, especially of oxygen, sodium, and the hydroxyl radical (OH). Airglow is strongest over low and middle latitudes.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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更新时间:2024/9/20 16:24:58