The American physicist organization network reported on October 11 that carbon is the fourth element in the universe, and it has several allotropes. The two most common elements are high hardness diamond and soft and smooth graphite. . Now, American scientists have created a new form of carbon, and its ability to cope with extreme pressure has made diamonds "self-defeating." The breakthrough discovery will be published in the journal Physical Review Letters. The research team led by Ma Wendi of Stanford University and his graduate student Lin Yu (transliteration) and the scientists at the Carnegie Institute Geophysical Laboratory made this discovery. They made a glassy carbon of carbon with 400,000 times atmospheric pressure, creating a new carbon allotrope. Glass carbon was first synthesized in the 1950s. It combines the qualities of glass, ceramics and graphene for a wide range of applications. Scientists have discovered that new forms of carbon can withstand 1.3 million times atmospheric pressure in one direction and 600,000 times atmospheric pressure in other directions. Nothing other than diamond can withstand such a large pressure, which shows that this new carbon allotrope is indeed very hard. However, unlike diamond and other forms of carbon crystals, this new material is a non-crystalline material, which means that its structure lacks the long-range order of the crystal. If the non-crystalline, superhard carbon allotropes have the same hardness in all directions, the potential advantage is stronger than diamond. The hardness of diamond depends mainly on the orientation of the crystal. Russell Hemley, director of the Geophysical Laboratory at the Carnegie Institution, said: "The latest discoveries will have many applications. Scientists can use it to create ultra-hard anvils and other ultra-compact, super-high-pressure research institutes. Hard new material."
Stainless Steel Shower Head
The utility model discloses a Kitchen Shower head that is convenient to switch the water outlet mode, has a compact structure, and is easy to use and a kitchen faucet using the kitchen shower head. The shower head includes a shower body and a shower head provided with a spray water outlet and a V-shaped water outlet. , The shower head is provided with a water separator, and the water separator is provided with an annular flow channel and an inner flow channel respectively connected to the spray water outlet body and the V-shaped water outlet body, and the lower end of the outer wall of the water separator is upwardly circular A plurality of water inlet holes connected to the annular flow channel are provided, and a first sealing ring is provided on the lower side of the water inlet hole; the water outlet end of the shower body is connected with a converter, and the converter is provided with a communicating In the water diversion cavity at the water outlet end of the shower body, the lower end of the water diversion device is installed in the water diversion cavity and can move up and down, and the upper end of the inner wall of the water diversion cavity is provided with a matching first sealing ring
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