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A strip of paper with a line burned into it.
Date Taken:
December 4, 2021
Photograph By:
Jeffrey DeRosa, NSF
License Type:
Creative Commons CC BY-NC-ND 4.0.

The Campbell-Stokes sunshine recorder at the South Pole measures sunshine using a glass sphere to amplify the sun’s intensity to burn a line into paper.

Meteorologist Jeff DeRosa took this photo during the 4 December 2021 partial solar eclipse.
The gap in the burn line indicates when the sun's rays were not intense enough to burn the paper.
At the start of the eclipse, the South Pole temperature was -26.5 °F / -32.5°C. When the sun was partially covered, the temperature dropped to -35.5 °F / -37.5°C.

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This photo is in the public domain.

Photos whose copyright has expired or were taken by government employees as part of their job duties are considered to be in the public domain. Public domain works are not subject to copyright laws. Anyone may download these photos and use them freely, even for commercial purposes.

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This photo is covered by a Creative Commons license. Please see the Usage and Submissions page for more information. Use of this photo requires the following:

(1.) The user must give appropriate credit to the photographer and the National Science Foundation (NSF) and provide a link to the Creative Commons license. (2.) Use of the photo must be for non-commercial purposes only. (3.) No derivative works may be made with the original photo without the explicit permission of the photographer.