Portable Aitken type Dust Counter, 1900-1908

Made:
1900-1908 in United Kingdom
designer:
John Aitken
maker:
Unknown

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Portable Aitken type dust counter in wood and leather case, designed by Dr. John Aitken, unsigned, British, 1900-1908. The original bulky instrument was used at the Observatory on top of Ben Nevis in Scotland.

Contained in a case 'the size of a well-filled cigar case'. A piston action drew air into the test chamber, which was full of supersaturated air. The dust in the test sample formed nuclei for the water in the chamber to coalesce around, forming drops that could then be counted.

Details

Category:
Meteorology
Object Number:
1908-193
Materials:
brass (copper, zinc alloy), glass, leather, silk, velvet and wood (unidentified)
Measurements:
overall (case closed): 38 mm x 140 mm x 75 mm, .29kg
type:
case - container
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
  • measure - volume
  • furnishing and equipment
  • container - receptacle
credit:
Mr. J. Aitken.

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