Researchers at MIT have made a robotic earthworm that can inch forward by squeezing and stretching its artificial muscles.
It mimics a type of movement called peristalsis, where muscles contractions are used to propel different organisms and organs. Worms, snails and sea cucumbers use the mechanism, and human gastrointestinal tracts use a similar action to push food to the stomach.
By: Mark Brown, Edited by: Duncan Geere
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via Wired.co.uk
http://www.wired.co.uk/news/archive/2012-08/10/robot-worm
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