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Kristian Birkeland and his terrella experiment.

"The Figure shows the whole arrangement with the new vacuum-box of 320 litres. Floor and ceiling are here made of 12 mm. steel plates, the pillars between are of bronze, and the sheets of plate-glass at the sides are 30 mm. in thickness. The experiment shows the "zodiacal-light ring". It requires little magnetising of the globe (11.3 cm. in diameter), but a great discharge-current (up to 100 milliamperes)."

Sourced from the book, The Norwegian Aurora Polaris Expedition 1902-1903, Volume 1: On the Cause of Magnetic Storms and The Origin of Terrestrial Magnetism, Section 2. Chapter VI: p.667 (published in 1913), By Kristian Birkeland (1867-1917) also on the Web at [url=http://www.catastrophism.com/texts/birkeland/]

Source: english wikipedia, original upload 5 June 2005 by Iantresman en:Image:Birkeland-terrella.jpg

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aktualny10:36, 30 maj 2015Miniatura wersji z 10:36, 30 maj 20151024 × 744 (48 KB)Pirogronian (dyskusja | edycje)Kristian Birkeland and his terrella experiment. "The Figure shows the whole arrangement with the new vacuum-box of 320 litres. Floor and ceiling are here made of 12 mm. steel plates, the pillars between are of bronze, and the sheets of plate-glass at...
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