Jean-augustin Barral
by Collection Abecasis/science Photo Library
Title
Jean-augustin Barral
Artist
Collection Abecasis/science Photo Library
Medium
Photograph - Photograph
Description
Jean-Augustin Barral (1819-1884). 1867 illustration of the French agricultural chemist, meteorologist, physicist and professor Jean-Augustin Barral. Barral was the first to extract nicotine from tobacco leaves. In 1850, with Jacques Alexandre Bixio, he made two aerostatic scientific expeditions in a hydrogen-filled balloon to observe variations in the temperature, atmospheric pressure and humidity in the atmosphere at different altitudes. The severe weather conditions on the second flight made observations difficult but they attained a height of 7016 meters, though the temperature fell to 39 degrees F. below zero.
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September 16th, 2018
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