Jordan sunshine recorder

A Jordan sunshine recorder (left). The other instrument is a Marvin sunshine recorder.

A Jordan sunshine recorder is a type of sunshine recorder invented in the 19th century by T. B. Jordan with later modifications by his son, J. B. Jordan.[1] The device consists of a cylinder with two small apertures through which sunlight can pass. Two sheets of photosensitive paper are placed inside the cylinder and the recorder is positioned in such a way that the sunlight falling through the apertures leaves a path on the paper as the sun moves through the sky during the day.[2] The Jordan recorder was criticized as producing less consistent results than the Campbell–Stokes recorder due to difficulty in precisely interpreting the sun paths recorded.[3]

External links

  • AMS Glossary of Meteorology: Jordan Sunshine Recorder
  • Photograph of a Jordan Sunshine Recorder
  • Henry J Green Jordan sunshine recorder

References

  1. ^ Beadle, Martin (1966). "An Inexpensive Modification of the Jordan Sunshine Recorder". Weather. 21 (3): 98–101. doi:10.1002/j.1477-8696.1966.tb05196.x. ISSN 1477-8696. Retrieved 6 November 2021.
  2. ^ "Jordan's Photographic Sunshine Recorder". Nature. 33 (843): 180–181. 1 December 1885. doi:10.1038/033180b0. ISSN 1476-4687. Retrieved 6 November 2021.
  3. ^ Middleton, W. E. K.; Spilhaus, A. F. (2019-10-08). 4. The Pers sunshine recorder. University of Toronto Press. doi:10.3138/9781487572013-072/html. ISBN 978-1-4875-7201-3.
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