Bouncing back

 作者:洪壶     |      日期:2019-03-08 02:12:01
CENTRAL Americans manufactured elastic rubber from latex 3500 years before the modern invention of vulcanisation, say researchers in Massachusetts. Mayans were known to play a game using a rubber ball and used rubber bands to attach handles to axe heads, but no one had considered how these artefacts were made, according to Dorothy Hosler of the Massachusetts Institute of Technology in Cambridge. Examining native latex processing techniques, her team deduced that the ancients mixed raw latex from rubber trees with juice from morning glory vines (Science, vol 284,