Eli Whitney

ISBN: 9780822576075

出版社: Lerner Pub Group

出版年: 2007-10

页数: 48

定价: $ 31.56

装帧: LIB

内容简介

True or false? Eli Whitney invented the cotton gin, a machine for removing seeds from cotton. False Eli Whitney was the first person to build a wire-toothed cotton gin. But Eli's gin was not the first machine of its kind. He made nails to earn money when he was a boy. He went to court to protect his wire-toothed cotton gin when others tried to build similar machines. He started his own musket-making business.