RADIAL THREADS. “The high tensile strength and hysteresis of radial threads means they not only support the web but also work as shock absorbers during prey impact, while the geometric regularity of the web may help to spread prey energy out over more radial threads. Also, as radials have high tensile strength and stiffness while capture silks have lower strength but high elasticity, the ratio of radials to capture spiral turns may determine the energy-absorbing capabilities of a web.”
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