portrait de Kristian BIRKELAND (1867-1917) – physicien norvgien.
©MP/Leemage
Source:http://www.gettyimages.co.uk/detail/news-photo/portrait-of-norwegian-physicist-kristian-birkelandm-news-photo/141551105 *** Local Caption *** Kristian Birkeland
portrait de Kristian BIRKELAND (1867-1917) – physicien norvgien.
©MP/Leemage
Source:http://www.gettyimages.co.uk/detail/news-photo/portrait-of-norwegian-physicist-kristian-birkelandm-news-photo/141551105 *** Local Caption *** Kristian Birkeland