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the2bandits:

wilwheaton:

alwaysstarwars:

The ESB duel and Luke’s recovery - Art by Ralph McQuarrie

I love this art so much.

(via sagansense)

thedemon-hauntedworld:

Witch Head, M42 Mosaic
Credit: Bucksnort Observatory

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bpod-mrc:

25 August 2014

Patched-up Plastic

Skin is the largest organ of the human body, and one of its many functions is to provide a protective barrier which is able to repair itself when damaged. Scientists have recently taken inspiration from this biological system and developed a self-healing plastic. The chemical components of the plastic are held separately in a network of tiny channels which run throughout the material. When the plastic is damaged – as shown in the video – the chemicals spill out and mix together. They react in a process known as polymerisation, which causes them to harden and form a plastic patch of up to one centimetre in diameter. This process could be used to protect medical devices which are implanted in the body – such as artificial joints and pacemakers. A coating of self-healing plastic could prevent micro-fractures that these devices can incur as they degrade over time.

Written by Helen Thomas

Video by Katia Moskvitch
Copyright held by Nature Publishing Group
Paper published in Nature, May 2014

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