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In the early 2000s, a direct relationship between bulk modulus and valence electron density was found as the more electrons were present the greater the repulsions within the structure were. [10] Bulk modulus is still used as a preliminary measure of a material as superhard but it is now known that other properties must be taken into account ...
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Low-background steel, also known as pre-war steel [1] and pre-atomic steel, [2] is any steel produced prior to the detonation of the first nuclear bombs in the 1940s and 1950s. Typically sourced from ships (either as part of regular scrapping or shipwrecks ) and other steel artifacts of this era, it is often used for modern particle detectors ...
The Earth's magnetic field at 0.5 gauss is too weak to magnetize a lodestone by itself. [9] [10] The leading theory is that lodestones are magnetized by the strong magnetic fields surrounding lightning bolts. [9] [10] [11] This is supported by the observation that they are mostly found near the surface of the Earth, rather than buried at great ...
Divers investigating mysterious sheets of steel on the seafloor off Guam have discovered what amounts to a sunken trail in the Pacific Ocean. The pierced steel planking (PSP) has been identified ...
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Steel production (in million tons) by country as of 2023. The steel industry is often considered an indicator of economic progress, because of the critical role played by steel in infrastructural and overall economic development. [65] In 1980, there were more than 500,000 U.S. steelworkers. By 2000, the number of steelworkers had fallen to ...
Evidence of the production of crucible steel have been found in Merv, Turkmenistan, a major city on the 'Silk Road'. The Islamic scholar al-Kindi (801–866 CE) mentions that during the ninth century CE the region of Khorasan, the area to which the cities Nishapur, Merv, Herat and Balkh belong, was a steel manufacturing centre. [44]