ZDF (German national public Broadcast), 11 and 18 September, 2011
11 and 18 September, 2011, Wolfgang Würker presented his film on Kristian Birkeland on the television channel ZDF (the second German public channel). This beautiful film can be viewed on-film.de www.paolo ("Himmelsfeuer in der ZDF-Mediathek"). The planeterrella is presented.
Updated on 17 septembre 2021