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The word unobtainium derives humorously from unobtainable, with -ium, a suffix for chemical element names. It predates the similar-sounding systematic element names, such as ununennium, unbinilium, unbiunium, and unbiquadium. An alternative spelling, unobtanium, is sometimes used, by analogy to the names of real elements like titanium and uranium.
The real element 99, einsteinium, has no such qualities. Element 115 Ufology, various works Widely known within the sci-fi and UFO community; since, according to ufologist Bob Lazar, it is used by alien engines to generate anti-gravity and propulsion. The real element 115 is moscovium, a synthetic element with an extremely short half-life ...
The most stable of these nuclear isomers is astatine-202m1, [i] which has a half-life of about 3 minutes, longer than those of all the ground states bar those of isotopes 203–211 and 220. The least stable is astatine-213m1; its half-life of 110 nanoseconds is shorter than 125 nanoseconds for astatine-213, the shortest-lived ground state. [5]
Four years after the first synthesis of artificial diamond, cubic boron nitride c-BN was obtained and found to be the second hardest solid. [24] Synthetic diamond can exist as a single, continuous crystal or as small polycrystals interconnected through the grain boundaries. The inherent spatial separation of these subunits causes the formation ...
Osmium (from Ancient Greek ὀσμή (osmḗ) 'smell') is a chemical element; it has symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element.
The universe is permeated by a field known as the Higgs field, which gives everything its mass. But the Higgs field isn’t entirely stable, and if it were to “bubble,” it would change reality ...
However, radioactivity of this nuclear isomer has never been observed, and only a lower limit on its half-life of 2.9 × 10 17 years has been set. [32] The ground state of 180 Ta has a half-life of only 8 hours. 180m Ta is the only naturally occurring nuclear isomer (excluding radiogenic and cosmogenic short-lived nuclides).