Abstract
ON September 11, M. Lecadet, astronomer of the Lyons Observatory, made his fifth aeronautical ascent for testing the electricity of the air at high altitudes. This system of observation was invented by Dr. Exner, a member of the Vienna Academy of Sciences, who sent into the atmosphere a balloon directed by Lechner, on June 6, 1885. The balloon reached only an altitude of 600 metres, and the results of the reading, taken by an inexperienced observer, were of no value.
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DE FONVIELLE, W. Aeronautical Ascents for Measuring the Electrical Field of the Air. Nature 56, 599–600 (1897). https://doi.org/10.1038/056599a0
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DOI: https://doi.org/10.1038/056599a0