Remarkable Spiders Web

Remarkable Spiders Web
Did you know?
The strongest known spider silk is produced by the species Darwin’s bark spider (Caerostris darwini). Its silk is the toughest biological material ever studied, over ten times tougher than a similarly-sized piece of Kevlar. The average toughness of the fibre is 350 MJ/m3, and some are up to 520 MJ/m3, making the silk twice as tough as any other spider silk known. Note: Kevlar a high strength material and was first commercially used in the early 1970s as a replacement for steel in racing tires Kelvar is 5 times stronger than steel on an equal weight basis. The web of Darwin’s bark spider is remarkable in that it is not only the longest spanning web ever observed, but is among the largest orb webs ever seen, at an area of up to 2.8 square metres (30 sq ft). The spiders silk Consists mainly of protein, and is about a fifth of the density of steel (1.31 g/cm^3). As a result, a strand long enough to circle the Earth would weigh less than 500 grams (18 oz).
Pic: Unknown Spider

Spider

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