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It is isostructural with Si 3 N 4 and was predicted to be harder than diamond. [35] The calculated bond length was 1.47 Å, 5% shorter than the C-C bond length in diamond. Later calculations indicated that the shear modulus is 60% of that of diamond, and carbon nitride is less hard than c-BN. [36]
Such elements are predicted in the real world as an "Island of stability". In the novel by Jack Vance, duodecimates were deposited on a planet, Dar Sai, by the explosion of a nearby star. The planet's economy comes to depend on mining and sale of duodecimate ores. It is not revealed what the substance is actually used for. Duranium: Star Trek
Because the density is so similar to that of gold (tungsten is only 0.36% less dense), and its price of the order of one-thousandth, tungsten can also be used in counterfeiting of gold bars, such as by plating a tungsten bar with gold, [100] [101] [102] which has been observed since the 1980s, [103] or taking an existing gold bar, drilling ...
In the 2003 film The Core, [21] "Unobtainium" is the nickname of a 37-syllable long tungsten-titanium crystal alloy developed by Dr. Edward "Braz" Brazzelton that is able to absorb the extreme pressure and heat of the Earth's molten core and then convert these into usable energy; it's used in building the super resistant outer shell of the ship ...
The pro-immigration American Immigration Council estimated that deporting all immigrants in the U.S. illegally over more than a decade would cost $88 billion annually. Homan said the minimum ...
"It (was) a little too close for my comfort, with my family being in the house," he said. Tagovailoa added that the security is armed. "So I hope that if you decide to go to my house, you think ...
“When life's on the line or you're trying to fix a house, you need a solution that would get the job done that's simple enough to put out there,” Nussbaum said.
All of the remaining radioactive isotopes have half-lives of less than 24 hours, and most of these have half-lives that are less than 8 minutes. Tungsten also has 11 meta states with mass numbers of 158, 179, with 3, 180, with 2, 183, 185, 186, with 2, and 190, the most stable being 179m1 W (t 1/2 6.4 minutes).