1. TransmissometerA transmissometer is an instrument for measuring the extinction coefficient of the atmosphere, and for the determination of visual range. It operates by sending a narrow, collimated beam of energy through the propagation medium. A narrow field of view receiver at the designated measurement distance determines how much energy is arriving at the detector, and determines the path transmission and/or extinction coefficient.
Read “Transmissometer” on English Wikipedia
Read “視程計” on Japanese Wikipedia
Read “Transmissometer” on DBpedia
Read “Transmissometer” on English Wikipedia
Read “視程計” on Japanese Wikipedia
Read “Transmissometer” on DBpedia
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