![](http://www.alamy.com/thumbs/6/A8A8D41F-E5A9-4A46-8D3F-B8AFE5AC06A3/KK0JBA.jpg)
Kristian Birkeland eksperimenterer med nordlys i et vakuumkar, 1912 no nb digifoto 20160304 00236 bldsa fPORTRETT 0034
Size: 1769px × 1412px
Photo credit: © Historic Collection / Alamy / Afripics
License: Licensed
Model Released: No
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