Home > Term: Aitken dust counter
Aitken dust counter
An instrument developed by John Aitken for determining the dust content of the atmosphere. A sample of air is mixed in an expandable chamber with a larger volume of dust-free air containing water vapor. Upon sudden expansion, the air in the chamber cools adiabatically below its dewpoint, and droplets form with the dust particles as nuclei. A portion of these droplets settle on a ruled plate in the instrument and are counted with the aid of a microscope. See dust counter.
- Jenis Kata: noun
- Industri / Domain: Cuaca
- Kategori: Meteorologi
- Company: AMS
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- Kevin Bowles
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