File:Birkeland-terrella.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:01, 3 September 2005 | 1,024 × 744 (48 KB) | commons>Saperaud~commonswiki | 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 |
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