How can spiders vibrate their webs so fast?

Answer 1

I am not sure what you mean by "vibrate their webs so fast", you did not clarify that question. There are some things that Spiders do that are considered to be "amazing" and yet it is so natural. Such as to spin a spider web that molecular mass-wise is actually stronger than steel !!!! Yet they can take their web apart and restructure it when it is wind damaged. And who "taught" the trap-door spider to make a home in the ground with a closeable door ???? I've seen some spiders who sort-of "shake" their web strands rapidly, such that it was a blur. Perhaps that is what you are asking? Why they do that, I do not know. Maybe it attracts the curiosity of insects because it is a blur and the insects are more likely to fly into the shaking web strands? Why aren't birds afraid of heights? Obviously, some spiders not only have discovered they CAN shake their web strands in such a fashion, but that in some way it is also advantageous to do so! Since we are not in their realm, we do not know if this is to attract a meal, communicate with sound waves so delicate that we cannot hear them, or to communicate by vibrations through whatever it is that anchors their webs! For instance, it is known that certain baby beatles can make vibrations in the plant stems when they are threatened by a predator, and the mother beatle will rush to their rescue! This was discovered first by observation, then by extremely sensative sensoring devices! So who knows? I am not sure what you mean by "vibrate their webs so fast", you did not clarify that question. There are some things that spiders do that are considered to be "amazing" and yet it is so natural. Such as to spin a spider web that molecular mass-wise is actually stronger than steel !!!! Yet they can take their web apart and restructure it when it is wind damaged. And who "taught" the trap-door spider to make a home with a closeable door ???? I've seen some spiders who sort-of "shake" their web strands rapidly, such that it was a blur. Perhaps that is what you are asking? Why they do that, I do not know. Maybe it attracts the curiosity of insects because it is a blur and the insects are more likely to fly into the shaking web strands? Why aren't birds afraid of heights? Obviously, some spiders not only have discovered they CAN shake their web strands in such a fashion, but that in some way it is also advantageous to do so! Since we are not in their realm, we do not know if this is to attract a meal, communicate with sound waves so delicate that we cannot hear them, or to communicate by vibrations through whatever it is that anchors their webs! For instance, it is known that certain baby beatles can make vibrations in the plant stems when they are threatened by a predator, and the mother beatle will rush to their rescue! This was discovered first by observation, then by extremely sensative sensoring devices! So who knows?