curprev15:4315:43, 8 November 2018 Psubpsertalkcontribs 15,479 bytes+340 →Biography: The information in the previous entry that Biot went to 7000 meters with Gay-Lussac is incorrect. Biot only went up to 4000 meters with Gay-Lussac in July 1804. Gay-Lussac went to 7000 meters by himself in Sept 1804. I also added the experiment was designed to test whether the Earth's magnetic field decreased with elevation.undo