An optical instrument measuring the ultraviolet radiation penetrating the atmosphere. Designed by UK researcher,
Gordon Dobsonof the Oxford Clarendon Laboratory in the 1930s. About 120 Dobsonmeters have been made, mostly by R&J Beck of London. Today about 50 remain in use. The most famous ones are probably Nos. 37 and 51 with which Joe Farmanof the British Antarctic Surveydiscovered the Ozone Holein 1984. The oldest instrument still in use is No.8 located at the roof of the Norwegian Polar Instituteat Ny Ålesund, Svalbard.
= References =
* New Scientist, 20. Sept 2008
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