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Pers sunshine recorder

From Wikipedia, the free encyclopedia

A Pers sunshine recorder is a sunshine recorder in which sunlight is focused by a lens and reflected by a hemispherical mirror, tracing the sun's path onto photosensitive paper.[1] One advantage of this design is that it can be used at any latitude.[2]

References

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  1. ^ "AMS Glossary". 2006-02-25. Archived from the original on 2006-02-25. Retrieved 2021-11-07.
  2. ^ Middleton, W. E. K.; Spilhaus, A. F. (2019-10-08). 4. The Pers sunshine recorder. University of Toronto Press. doi:10.3138/9781487572013-072. ISBN 978-1-4875-7201-3.