This animal is a group of phyla including invertebrates and arthropods . In Arthopoda phyla , the spider goes into free-living Arachnoidea class and are carnivores with piercing and sucking the body fluids prey . Spiders belong to the arachnid order to characterize the abdomen is not segmented and have poison glands on its kelisera .
In Sefalotoraks there are four pairs of legs, and pedipalps kelisera. Spiders do not have mouth to chew. They have a pair of large fanged jaws which serves to inject digestive enzymes that will kill their prey. His abdomen are spinnerets that there are many spigots. Spigot is fine thread drain holes gland which secretes a fluid containing elastic protein in the air to form fine threads is called a spider's web.
There must be some of you who had to wonder, how could cobwebs owned Spiderman became so strong that it could hold the weight of the super-heavy? It is only in the film. But you know, that is actually a real spider webs are also remarkable strong fiber!
The resulting thread is a thread of spider silk protein based called fibrions. This yarn is very strong, even if there is steel and spider thread with the same weight, spider silk is stronger and more elastic. Both of these characteristics make the spider thread one of the greatest material. Scientists also tried to make artificial spider silk.
Thread of spider silk is secreted as a liquid by a spinner in the spider's body, this spinner is a special gland that is located at the tip of the abdomen of the spider. In the event of contact with air, the liquid instantly hardens into a strong silky smooth. When produced, the spider pull the thread becomes long as needed to use his legs.
Yarn is woven into a spider web to catch prey. Well, then why not a spider caught in its own web? First, the spider knows which part of the sticky webs. Second, the spider moves gently over the net, as if moved by a sudden adhesive on the net will harden. Therefore there is hardly any possibility of exposed spiders trapped backfire alias own net.
Benefits of spider webs.Spider webs have many features that make the scientists researching and looking for new innovations pertaining to the welfare of human life . Scientists use spider silk as a model when creating a material called Kevlar . Speed bullet five hundred feet per second can snag most of the objects in his ering , except for items made from Kevlar . However , spider silk ten times stronger than kevlar . This thread is also thinner than a human hair , lighter than cotton , but stronger than steel , and it is recognized as the strongest material in the world .
In addition to its exceptional ability , the spider is also an animal species that spread is very wide and relatively easy on the can . Up to now , about 40,000 species of spiders have been found and classified into 111 parts . However, given that these animals are so diverse , many of which are very small stature , often hidden in nature , and even many specimens in the museum that has not happened with a good description , it is believed that the possibility of a variety of types of spiders can reach 200,000 species entirely .
Spider webs.Spider webs are made of threads of load-bearing frame and encrusted spiral thread catcher adhesives, as well as the unifying thread binding thread load-bearing frame, spiral threads catcher, and the binder yarns.
There are many types of spider webs that can be found in this world. Spider web shape can be distinguished based on the way a spider weave, namely:
- Net ball spiral, which is produced by the spider family Araneidae,
Tetragnathidae and Uloboridae.
- Spiderweb, associated with the family Theridiidae.
- Funnel, was divided into primitive and modern.
- Pipes, Sheets, and the Dome.
Distribution of spiders in the world.There are more than 40,000 species of spiders in the world are already known , and more than thousands of species yet to be identified . Research in Indonesia said that about 50 new species of spiders are found on the island of Irian Jaya , and some newly discovered species also in foreign countries. Araneus diadematus species found in gardens of various countries in Europe , whereas Nephila clavipes is found in the Americas region , and Argentina .
Applications and benefits of cobwebs.Broadly speaking, the use of spider webs were divided into three groups;
a) As a textile material.
Spider webs have the privilege that is robust in withstanding the pressure and have good elasticity, making it excellent for use as a textile material as bullet proof vests, clothing resistant to rips, safety belts, parachutes and nets.
b) As an environmentally friendly polymer materials
Cobwebs have bioactive properties good for the environment so it is good for the manufacture of polymeric materials for example plastic or fiberglass biodegradable bottles.
c) As a biomedical material.
Because it has anti-bacterial properties and biocompatible, so it can be utilized in medical as in surgical sewing thread, adhesive material on the tendon, as well as materials for artificial ligament maker.
Scientists Reveal Secret Power spider webs.
Scientists in the United States managed to find out why the cobwebs able to withstand great force. They claim these findings could be used to help design a new generation of super-strength materials.
According to scientists, the tremendous power of spider webs not only due to the raw materials of silk yarn that is tough, but also intricate webs design itself.
Markus Buehler of the Massachusetts Institute of Technology in Boston, said the real power of spider webs lies not in its constituent silk thread. "But the change in mechanical properties when there is on the net," he said.
The structure of complex net plays an important role. When one strand of yarn broken or damaged, for example, the overall strength of spider webs actually increased. According to Buehler, making nets confiscated most of the energy spiders that animals need a design that prevents major repair when damaged nets.
The scientists also discovered silk threads on a spider web has the ability to become soft or rigid, depending on how much load it takes. "It's not as natural or man-made fibers other," said Buehler again.
The scientists compared the spider silk thread with three other ingredients as a maker of nets. Apparently, the spider silk six times more resistant to damage when hit by falling branches or high winds.
Similarly, when given the additional load. Only one interwoven threads of spider silk damaged. With minimal damage, the spiders only need to do minor repairs on any existing damage to their webs instead of making a new net.
What is also surprising, when the researchers reduced the load of up to 10 percent of various points on the spider's web, the web is actually 10 percent stronger. According to this study, the thread of spider silk is five times stronger than a similar thread made of steel.
Recent research published in the journal Nature, Friday, February 3, 2012, this finding, spider webs contain two types of silk thread. The first type is the silk thread stretched stiff and dry as the radius from the center point to the edge of the net.
The second type is the silk thread that is thinner and sticky, so-called "sticky silk". The second type of thread is a circle, stick to the fingers dry silk. Sticky silk is also useful for trapping prey caught in the spider web.
So, thank you for reading this article.
Written and posted by Bambang Sunarno. firstname.lastname@example.org
name: Bambang Sunarno.
DatePublished: April 11, 2014 at 17.05
Tag : Did you know Spider Web?