The Columbia Encyclopedia, Sixth Edition. 2001-07.
Belidor, Bernard Forest de
(brnär´ fôr´ d bldôr´) (KEY) , 16931761, French engineer. He wrote numerous books dealing with mathematics, artillery, and hydraulic, civil, and military engineering. One of his engineering works, a manual of rules and tables, was reprinted until 1830. His four-volume Architecture hydraulique (173753) was the first work of its kind to apply integral calculus to practical problems; its influence for the next hundred years was international in scope.