Gay-Lussac and Biot conducting physics experiments in a hot air balloon, 1804. Joseph Louis Gay-Lussac also Louis Joseph Gay-Lussac; 1778 – 1850. French chemist and physicist. Jean-Baptiste Biot, 1774 – 1862. French physicist, astronomer and mathematician.

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Gay-Lussac and Biot conducting physics experiments in a hot air balloon, 1804. Joseph Louis Gay-Lussac also Louis Joseph Gay-Lussac; 1778 – 1850. French chemist and physicist. Jean-Baptiste Biot, 1774 – 1862. French physicist, astronomer and mathematician. From Les Merveilles de la Science, published

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