Editing Kristian Birkeland (section)

==Legacy==
Birkeland's theory of the [[Aurora (astronomy)|aurora]] was eventually confirmed and accepted as correct.

An example of one of his experiments is depicted on the left front of a previous version (issued in 1994) of the [[Banknotes of the Norwegian krone#200 kroner note|Norwegian 200 kroner note]];<ref>{{cite journal|doi=10.1063/1.882620 |title=Let's Get Fiscal: More Noteworthy Physicists |year=1999 |last1=Egeland |first1=Alv |author-link=Alv Egeland |journal=Physics Today |volume=52 |issue=4 |page=15 |bibcode=1999PhT....52d..15E |url=https://pubs.aip.org/physicstoday/article-abstract/52/4/15/410779/Let-s-Get-Fiscal-More-Noteworthy-Physicists}}</ref> it shows a magnetized [[terrella]], simulating  the Earth, suspended in an evacuated chamber. Birkeland's face appears a second time in a watermark in the blank space above the drawing of the terrella, and his rudimentary magnetosphere appears on the back, but is only visible under ultraviolet light. The ring encircling the magnetic pole depicted on the back of the bank note is similar to the patterns predicted by Birkeland and shown more recently by satellites. His drawing of what became known as [[Birkeland currents]] from his book, ''The Norwegian Aurora Polaris Expedition 1902–1903'',<ref name=NAPE /> is shown on the back of the banknote at the right.

In 2017, Yara International ordered the {{MV|Yara Birkeland||2}}, which will be the world's first autonomous ship and is named after Birkeland. It will enter service in 2018 and be fully autonomous by 2020.<ref name=Yara>{{cite web |url=http://yara.com/media/stories/yara_birkeland_vessel_zero_emission.aspx |title=The first ever zero emission, autonomous ship |publisher=Yara International |date=9 May 2017 |access-date=25 July 2017 |archive-date=26 July 2017 |archive-url=https://web.archive.org/web/20170726222759/http://yara.com/media/stories/yara_birkeland_vessel_zero_emission.aspx |url-status=dead }}</ref>