翻訳と辞書 Words near each other ・ Aethalides ・ Aethalina ・ Aethalionopsis ・ Aethalochroa ・ Aethalochroa affinis ・ Aethalochroa ashmoliana ・ Aethalochroa insignis ・ Aethalochroa simplicipes ・ Aethalochroa spinipes ・ Aethalodes verrucosus ・ Aethaloessa ・ Aethaloessa calidalis ・ Aethaloessa floridalis ・ Aethaloessa rufula ・ Aethaloida ・ Aethalometer ・ Aethaloperca rogaa ・ Aethalops ・ Aethalopteryx ・ Aethalopteryx anikini ・ Aethalopteryx atrireta ・ Aethalopteryx dictyotephra ・ Aethalopteryx diksami ・ Aethalopteryx elf ・ Aethalopteryx forsteri ・ Aethalopteryx gazelle ・ Aethalopteryx grandiplaga ・ Aethalopteryx gyldenstolpei ・ Aethalopteryx kisangani ・ Aethalopteryx masai Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Aethalometer ： ウィキペディア英語版 Aethalometer An aethalometer is an instrument for measuring the concentration of optically absorbing (‘black’) suspended particulates in a gas colloid stream; commonly visualized as smoke or haze, often seen in ambient air under polluted conditions. The word aethalometer is derived from the Classical Greek verb ‘aethaloun’, meaning ‘to blacken with soot’. ==Principle of operation == The gas stream (frequently ambient air) passes through a filter material which traps the suspended particulates, creating a deposit of increasing density. A light beam projected through the deposit is attenuated by those particles which are absorbing (‘black’) rather than scattering (‘white’). Measurements are made at successive regular time intervals. The increase in attenuation from one measurement to the next is proportional to the increase in the density of optically absorbing material on the filter: which, in turn, is proportional to the concentration of the material in the sampled air stream. The sample is collected as a spot on a roll of filter tape. When the density of the deposit spot reaches a pre-set limit, the tape advances to a fresh spot and the measurements continue. Measurement of the sample gas flow rate and knowledge of the instrument’s optical and mechanical characteristics permit a calculation of the average concentration of absorbing particles in the gas stream during the sampling period. Aethalometers may operate on time-base periods as rapid as 1 second, providing quasi-real-time data. Comparison of aethalometer data with other physical and chemical analyses allows the output to be expressed as a concentration of black carbon. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Aethalometer」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.