Home›Browse›air mass🌐EnglishEnglishDeutschEspañolFrançaisNederlandsPolskiРусскийالعربية한국어中文日本語EntityQ352923· pop 12· linked from 42 articlesair massSign in to saveoptical path length through Earth’s atmosphere for light from a celestial sourceAvailable in 11 languagesFrançaisDeutsch中文РусскийالعربيةArmenianNederlandsPolskiUzbek한국어via Wikidata sitelinks · CC0