Search results
Results from the WOW.Com Content Network
The hardness of synthetic diamond (70–150 GPa) is very dependent on the relative purity of the crystal itself. The more perfect the crystal structure, the harder the diamond becomes. It has been reported that HPHT single crystals and nanocrystalline diamond aggregates (aggregated diamond nanorods) can be harder than natural diamond. [25]
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
The adjective adamant has long been used to refer to the property of impregnable, diamond-like hardness, or to describe a very firm/resolute position (e.g. He adamantly refused to leave ). The noun adamant describes any impenetrably or unyieldingly hard substance and, formerly, a legendary stone/rock or mineral of impenetrable hardness and with ...
Naturally occurring tungsten consists of four stable isotopes (182 W, 183 W, 184 W, and 186 W) and one very long-lived radioisotope, 180 W. Theoretically, all five can decay into isotopes of element 72 by alpha emission, but only 180 W has been observed to do so, with a half-life of (1.8 ± 0.2) × 10 18 years; [34] [35] on average, this yields ...
Just Words. If you love Scrabble, you'll love the wonderful word game fun of Just Words. Play Just Words free online! By Masque Publishing
(Reuters) -U.S. President-elect Donald Trump on Wednesday asked a federal judge to dismiss a lawsuit accusing him of making defamatory statements during his campaign about five Black and Hispanic ...
Average mortgage rates open the Thanksgiving holiday week higher as of Monday, November 25, 2024, with 30-year benchmark terms at just under 7.00%.
The ultimate tensile strength of a material is an intensive property; therefore its value does not depend on the size of the test specimen.However, depending on the material, it may be dependent on other factors, such as the preparation of the specimen, the presence or otherwise of surface defects, and the temperature of the test environment and material.