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140s BC

 
Sci & Tech Chronology: In the year 140 bce

Materials

The Chinese make paper. It is used as a packing material and for clothing, but not yet for writing. See also 105 ce Materials.

Tools

A Chinese text describes an incense burner suspended in a system of concentric rings so that it remains horizontal. This is the first Chinese description of such a universal joint, invented by Fang Feng. See also 189 ce Tools.


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Sci & Tech Chronology. History of Science and Technology, edited by Bryan Bunch and Alexander Hellemans. Copyright © 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "140s BC" Read more