photochemical activity

См. также в других словарях:

• chemosphere — ˈkēmə, ¦keməˌˌ noun Etymology: chem + sphere : a stratum of the upper atmosphere in which photochemical reactions are prevalent and which begins about 20 miles above the earth s surface * * * /kee meuh sfear , kem euh /, n. the region of the… …   Useful english dictionary

• chemosphere — /kee meuh sfear , kem euh /, n. the region of the atmosphere most characterized by chemical, esp. photochemical, activity, starting in the stratosphere and including the mesosphere and perhaps part of the thermosphere. [1945 50; CHEMO + SPHERE] * …   Universalium

• actinic — adj. of actinism, of the radiative property which produces photochemical activity …   English contemporary dictionary

• actinism — n. element in radiant energy which produces photochemical activity …   English contemporary dictionary

• actinochemistries — n. branch of chemistry which deals with actinism (element in radiant energy which produces photochemical activity) …   English contemporary dictionary

• actinochemistry — n. branch of chemistry which deals with actinism (element in radiant energy which produces photochemical activity) …   English contemporary dictionary

• actinologies — n. scientific study of actinism (element in radiant energy which produces photochemical activity) …   English contemporary dictionary

• actinology — n. scientific study of actinism (element in radiant energy which produces photochemical activity) …   English contemporary dictionary

• chemosphere — che•mo•sphere [[t]ˈki məˌsfɪər, ˈkɛm ə [/t]] n. mer the region of the atmosphere most characterized by chemical, esp. photochemical, activity, starting in the stratosphere and including the mesosphere and perhaps part of the thermosphere •… …   From formal English to slang

• che|mo|sphere — «KEE muh sfihr, KEHM uh », noun. the region of predominant photochemical activity in the outer stratosphere, the mesosphere, and the ionosphere …   Useful english dictionary

• atmosphere, evolution of — Introduction  the development of Earth s (Earth) atmosphere across geologic time. The process by which the current atmosphere arose from earlier conditions is complex; however, evidence related to the evolution of Earth s atmosphere, though… …   Universalium