John Jeffries, US balloonist

Numéro d’image : 12376978
John Jeffries, US balloonist
John Jeffries (1744-1819). 1867 illustration of the US physician, meteorologist and balloon aviation pioneer Dr John Jeffries. Jefferies was a British military surgeon during the American Revolution. In London, in 1784, he made a scientific study of the air at high levels. He approached French balloonist Jean-Pierre Blanchard and (with a barometer, thermometer, hygrometer, electrometer, and mariner's compass) they made two flights. His observations were passed to the Royal Society. The first flight was from London to Dartford, the second in 1785 making the first aerial crossing of the English Channel.
Licence : Droits gérés
Crédit: Science Photo Library / Collection Abecasis
Taille de l’image : 3515 px × 4971 px
Model Release : Non requis
Property Release : Non requis
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