用英语介绍四大发明来历写它的来历，时间，谁发明的，60字左右，要简单点，初三看的懂的，（不要复制粘贴

Question

如题所述

Answer 1

The earliest reference to magnetism in Chinese literature is found in a 4th century BC book called Book of the Devil Valley Master (鬼谷子): "The lodestone makes iron come or it attracts it."
The earliest reference to a magnetic device used as a "direction finder" is in a Song Dynasty book dated to AD 1040-44. Here there is a description of an iron "south-pointing fish" floating in a bowl of water, aligning itself to the south. The device is recommended as a means of orientation "in the obscurity of the night."[10] However, the first suspended magnetic needle compass was written of by Shen Kuo in his book of AD 1088