Tungsten,the chemical symbol for this element is W, atomic number 74. The name comes from Sweden and translated as "heavy stone", in recognition of this metal's a more obvious trait.
Pure tungsten is silver, very hard, with a high melting point (3422 degrees C / 6192 degrees F) - any metal and the highest after carbon (3550 degrees C / 6422 degrees F). Tungsten is quite rare on earth, occurring only in the wild.
So far, I think you are want to know the chemical symbol, W, from. Although this element is known as tungsten in many English and French speaking countries, some European countries know wolfram, this word comes from Yu Deguo, in the face of this "wolf's bubble" or "butter" - a large number of references are extracted by tungsten and tin.
Although slightly toxic, tungsten does not play (known) biological effects in animals or plants (eukaryotes). But this element is interesting evolutionary biologists and microbiologists because enzyme tungsten-containing was found in some species of Archaea and bacteria, it is the life of the hyperthermophilic Archaea species, seabed furiosus and Thermococcus litoralis tungsten was also found to inhibit the growth of other bacteria. Biologists can appreciate: I ran over the strange creature's discovery is a study that shows that sodium fetida Eisenia to prevent the propagation of earthworms species.
Since tungsten is less sensitive than gold alloy and it is used as an alternative to gold or platinum jewelry. But more interesting because of tungsten is so dense gold. It is used to fake gold bars, a ruse to fool unsuspecting investors.
The density of tungsten is also useful in the bait, and its power to make it appealing for certain types of string instruments and as an environmental leadership change of the bullet.
Tungsten carbide is a very useful tool for the use of ceramic knives, drills and circular saws for all kinds of metal processing, wood processing, mining, petroleum and construction tools.
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