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中国人最早利用天然磁石的磁性来辨别南北,本是早已得到世界范围认可的事情。意大利数学家杰罗姆·卡丹早在1550年就第一个指出,中国对世界所具有影响的“三大发明”:是磁罗盘、印刷术和火药。1620年,英国哲学家培根也曾在《新工具》一书中提到:“印刷术、火药、指南针这三种发明已经在世界范围内把事物的全部面貌和情况都改变
The earliest Chinese people use the magnetism of natural magnetism to distinguish North and South, which is already recognized by the world. As early as 1550, the Italian mathematician Jerome Cardin pointed out that ”the three great inventions“ that China has an influence on the world are magnetic compass, printing, and gunpowder. In 1620, the British philosopher Bacon also mentioned in his book New Tools: ”The three inventions of printing, gunpowder and compass have changed the whole picture and situation of things all over the world