How many spiders does it take to stop a Boeing 747?

  While most people are afraid of spiders, I love them. You can call me a freak, and of course you can call me Spider-Man, like Peter Parker, the protagonist of the movie Spider-Man.
  Spiders belong to the Arachnid class under the order Arachnid, and belong to the same group of arthropods as scorpions or mites. Of course, if the mite could be a little bigger, there might also be a doomsday movie for it. Today, as many as 46,500 species of spiders have been identified, and many of them have surprising characteristics.
  The most amazing thing is not the athletic ability of spiders, but their ability to create a tough protein fiber, which is what we often call “spider webs”. Scientists and engineers have been studying this extremely unique material for many years, trying to find new uses for it. Of course, not all spiders can weave webs, only those weaver spiders with poor eyesight need to weave a web to facilitate their hunting and eating. How strong is the spider web? Seven centimeters of spider silk, which can stop a Boeing 747 in flight, is more than five times stronger than steel and almost five times stronger than Kevlar body armor. To be accurate to the numbers, if the thickness of a spider silk is 1 micron, which is one thousandth of a millimeter, it only takes 70,000 spiders to stop our Boeing aircraft. Who’s to say spider silk looks fragile?
  In addition to stopping planes, spider silk’s biocompatibility makes it potentially useful in biotechnology, regenerative medicine, absorbable surgical sutures or cell culture. Other possible uses are also being researched to improve the efficiency and durability of batteries for use in smartphones or tablets.
  Spider fibers can be used for many other purposes besides weaving webs, such as nesting, reproduction, climbing, airborne, diving bells (for water spiders that live underwater), motion sensors, and even food— — when there is nothing else to eat. The spider’s airborne behavior, also known as “balloon flight,” is somewhat similar to paragliding training that humans do. Spiders have cobwebs that can both float in the wind and stick to their prey, so they can go to islands dozens of kilometers away to “colonize” in order to survive and let the spider species spread everywhere. Krakatoa erupted in 1883, almost completely destroying the small island between Java and Sumatra. Seven months later, the first creatures discovered by the explorers on the island were spiders—probably arriving on the island by airborne.
  ”How many spiders does it take to stop a Boeing 747?” I posted this question on major social networking sites, and some netizens said: For a pilot with arachnophobia, he only needs to put it in his cabin One spider is enough!