Visibility recorder

Visibility recorder

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Caption: Visibility recorder, also called a nephelometer. This device uses a beam of light and a light detector to measure the amount of particles suspended in a gas or liquid, in this case in the atmosphere. This allows a measure to be obtained of the degree of visibility, and how much it is reduced by meteorological phenomena such as fog, pollution, or a combination such as smog. The data gathered here is used by the Met Office, the UK's national weather monitoring and forecasting service. Photographed in the UK.

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Keywords: 1900s, 20th century, apparatus, atmospheric, atmospheric science, britain, british, data collection, earth science, england, english, equipment, europe, european, fog, forecasting, instrument, instruments, measurement, measurements, measuring devices, met office, meteorological, meteorology, meteorology office, national weather service, nephelometer, particulate, particulates, pollution, smog, technological, technology, uk, united kingdom, visibility recorder, weather station

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