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In the year (1809) that napoleon defeated the austrians at wagram, and annexed tuscany and the papal states, gay-lussac announced his discovery of the law of volume. This all-important law is generally stated, in these days, in the following words when gases or vapours, either elementary or compound, unite together to form a new product, the resulting product always occupies two volumes. In 1808 napoleon ordered the construction of a colossal power battery to the polytechnic school, gay-lussac and thénard were put at the forefront of research, and although the results obtained with the battery were weak entity, collaboration in matters of chemistry was very fruitful discovered boron a few days before did davy, a method for obtaining sodium, potassium and its oxides from. Joseph louis gay-lussac (uk e l u s k , us e l s k , french zf lwi lysak 6 december 1778 ) was a french chemist and physicist. Gay-lussac served in 1818 as superintendent of the government gunpowder plant and as chief assayer of the national mint in 1829. Joseph louis gay-lussac (17781850) lived through three revolutions in france and his life reflected the social transformations taking place around him. Joseph louis gay-lussac (1778-1850) lived through three revolutions in france and his life reflected the social transformations taking place around him. this year marks the bicentenary of the births of two distinguished chemists, joseph gay-lussac and humphry davy. Uoft libraries is getting a new library services platform in january 2021.