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Barral & Bixio's meteorological flight

Barral & Bixio's meteorological flight

C018/0924

Rights Managed

50.0 MB (7.8 MB compressed)

3686 x 4742 pixels

31.2 x 40.1 cm ⏐ 12.3 x 15.8 in (300dpi)

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Credit

SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY

Caption

On July 27, 1850, two French agronomists, Jacques Alexandre Bixio and Jean Augustin Barral, made an ascent by a hydrogen-filled balloon from the garden of the Paris Observatory. They had seven objectives which included measuring the effect of altitude on the decrease of temperature, the variation in solar radiation, hygrometry, chemical analysis of air, the polarization of light by clouds and other optical phenomena. They were equipped with 2 barometers, 3 thermometers, a Walferdin minimum thermometer, a hydrometer and an Arago polariscope.

Release details

Model release not required. Property release not required.

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