An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک



reducing atmosphere
  جوّ ِ باز‌هازنده، هواسپهر ِ ~  
javv-e bâzhâzandé, havâsepehr-e ~
Fr.: atmosphère réductrice  
  1. An atmospheric condition in which oxidation is prevented by removal of oxygen and other oxidating gasses or vapours. Usually nitrogen or hydrogen gas is used in order to produce specific effects, e.g. on ceramic wares being fired.

  2. An atmosphere of a planet or moon which has a high hydrogen content, either in the form of free hydrogen or hydrogen-containing compounds, such as methane or ammonia. The early atmosphere of Earth is thought to be reducing, dominated by carbon dioxide.

See also: Reducing verbal adj. of → reduce; → atmosphere.