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Spider Silk

February 15, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2017/02/EW-02-15-17-Spider-Silk.mp3

Spider silk – the protein fiber spun by spiders to make webs, nests, cocoons, and wrapping for prey that they stash away – is a remarkable substance.  Its mechanical properties combine high tensile strength and high extensibility or ductility.  This allows spider silk to absorb a lot of energy before breaking.   It is stronger than steel, but not as strong as Kevlar, for example.  On the other hand, it is tougher than either.

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