Jacques Alexandre Le Tenneur

[1] In 1651 he became King Louis XIV's counsellor to the provincial senate of the old French province of Guyenne in Bordeaux.

[1] Le Tenneur was one of the few French scholars to understand Galileo and was involved in the debates around the controversy of falling bodies.

Basically, Fabri argued that Galileo was resorting to the existence of mathematical instants which had been an ancient problem in Zeno's paradoxes.

The consequence of this is that heavy bodies have no innate speed, but that in falling, they pass through all degrees of slowness and speed.”[4] Another debate during his life was whether a vacuum could be created.

[6] Mersenne was wrong in thinking that since light could pass through the space above the mercury column than it was probably not a vacuum.

[7] In 1640, Le Tenneur published “Traité des quantites incommensurables ou sont decidees plusieurs belles questions des nombres rationaus et irrationaus, l'erreurs de Stevin refutées, le dizieme livre d'Euclide illustre de nouvelles demonstrations”.