Entangled
by Cyril Simon Wedlund, BIRA-IASB, Brussels, Belgium
South auroral oval and polar rain simulated in laboratory using the Planeterrella experiment (J. Lilensten et al., UJF/CNRS, Grenoble, France).
http://planeterrella.obs.ujf-grenoble.fr/English/index.php
The Planeterrella was redesigned after K. Birkeland's original terrella experiments, which in the 1900s helped him unveil the mechanisms at the origin of polar aurorae.
A magnetised aluminium sphere is placed in a vacuum chamber. An electric current is then established between the sphere (anode) and the electrode at the top of the figure (cathode) producing emissions in the visible and UV ranges.
Taken on 28
May
2010
Submitted on 10 March 2011
Featured on GeoLog, the official blog of the European Geosciences Union
Categories
- Historical (141)
- Interdisciplinary/Other (765)
- Laboratory (100)
- Planetary and Solar System Sciences (118)
- Solar-Terrestrial Sciences (87)
Location
- Europe (3321)
- Western Europe (664)
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- Exact location (5.7316 E, 45.1943 N)
Tags
aurora, terrella, planeterrella
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Camera:
Nikon D200
Licence
Credit: Cyril Simon Wedlund (distributed via imaggeo.egu.eu)
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