How do spiders weave webs?

In the countryside, or in some abandoned old houses and factories, it is always not difficult to find spiders and cobwebs. Some people are curious, how do spiders weave webs? How do you make the first thread when you make a net?

In fact, different kinds of spiders make webs in different ways, and the shapes of their webs are also different. Some spiders even only prey and don't weave webs. When an ordinary spider spins a web, it spits out "juice" from its stomach. These liquids solidify rapidly in the air and become tough and elastic filaments. The strength of spider silk is five times that of steel wire with the same volume.

In addition, there are several pairs of things similar to spinners at the tail of the spider. When a spider walks, it pulls the silk. When it reaches the place where it needs to be fixed, it will hang the silk with a small protrusion at the tail and then continue to rotate.

Usually when a spider spins a web, it will find a fixed point in a spacious place and fall down along the spinning. When the wind comes, it will easily reach the other end and then fix the first thread.

Next, the spider will release a hanging silk and continue to rotate downward at the midpoint of this silk to form a Y-shape. Then the spider will connect several fixed points, so that the outer frame of the gossip net is completed. Next, you just need to start from the center of the net, keep rotating and fixing it on the outer frame, and then spiral the net from the inside out, and you can wait to catch mosquitoes and flies.

In fact, it is not only difficult for spiders to weave their webs in the first lap, but also in the first few laps. Besides, the spider's silk is not sticky when the web is just spun. When the whole web is finished, the spider will eat the original silk and spit out the sticky silk. Knowing how to use airflow to fix spider silk, I have to say that spiders are clever masters.

Spiders have six spinning bags in their bellies, and the silk they spit out can be used to weave webs. Pull a few warp threads first, then run to the other end and repeat the same action. The warp is pulled evenly at both ends, which makes the network cable tighter and more evenly distributed. After weaving all the warp yarns, the spider will return to the shaft to rest, and then engage in weft knitting along the shaft pulled by the warp yarns. Taking the axis as the midpoint, the spider slowly weaves horizontal lines around the warp with filaments that are almost invisible to the naked eye. The interval between each horizontal line is very precise. This area woven with filaments is called "rest area". After the rest area was built, spiders began to pull thick silk, which can be seen. It can adjust the thickness of silk thread at will, and use spiral knitting to widen the distance between thick weft threads.