Spiders weave a thread

Releasing cobweb, he attaches it to the end of the surface on which there is, and continues to produce it. Gossamer is so light that the most gentle breeze pulls it. It turns out the loop. The breeze pulls the loop, and spider produces and publishes a web thread. Loop increases. Then the spider bites cobweb at the point of attachment, and now, instead of the loop, the wind pulls quite a long thread. Continues to produce a cobweb spider, and the thread is getting longer and longer. Than it is longer, the stronger it pulls the wind. Finally, he pulls so hard the thread that the spider is hard to keep. He draws in his feet, and the spider with it soars into the air. Cobweb drifting in the air, and on it sits spider. Racing across the wire, it changes the center of gravity of the aircraft, and the spider changes its position. Collecting a ball end of the thread, spider shortens the Web, and it falls. In an open space spider can fly very far, even for several kilometers. Strong winds it could Record for hundreds of miles, but we must remember that flights are always during calm weather. In a weak flow of air flight spider is slow. Spider to a certain extent can control his flight. Here he begins to reel off a ball that end, on which hangs. As the flying string is shortened, spider with it slowly sinks. What is the meaning of air travel? Tens and hundreds of spiders are derived from the cocoon, pending spider. At first they lived the whole society, but they do closely. They interfere with each other. Difficult for them to hunt. At all production is not enough. And so thousands of years formed an instinct: to settle or disperse on silk threads. For the hunting tribes of spiders it is important to take a wider territory and to each take a separate "hunting site.