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Metallurgy derives from the Ancient Greek μεταλλουργός, metallourgós, "worker in metal", from μέταλλον, métallon, "mine, metal" + ἔργον, érgon, "work" The word was originally an alchemist's term for the extraction of metals from minerals, the ending -urgy signifying a process, especially manufacturing: it was discussed in this sense in the 1797 Encyclopædia ...
Metallurgy only appears in Mesoamerica in 800 CE with the best evidence from West Mexico. Much like in South America, fine metals were seen as a material for the elite. Metal's special qualities of colour and resonance seemed to have appealed most and then led to the particular technological developments seen in the region. [40]
Dendritic crystallization after melting inside sealed ampules of rubidium and caesium metal. A dendrite in metallurgy is a characteristic tree-like structure of crystals growing as molten metal solidifies, the shape produced by faster growth along energetically favourable crystallographic directions. This dendritic growth has large consequences ...
Muntz metal (also known as yellow metal [1]) is an alpha-beta brass alloy composed of approximately 60% copper, 40% zinc and a trace of iron. It is named after George Fredrick Muntz , a metal-roller of Birmingham , England , who commercialised the alloy following his patent of 1832.
The Metallurgy of Roman Silver Coinage: From the Reform of Nero to the Reform of Trajan. Cambridge: Cambridge University Press, 2014. Corretti,Benvenuti. "Beginning of iron metallurgy in Tuscany, with special reference to Etruria mineraria." Mediterranean archaeology 14 (2001): 127–45. Healy, John F. Mining and metallurgy in the Greek and ...
Powder metallurgy (PM) is a term covering a wide range of ways in which materials or components are made from metal powders. PM processes are sometimes used to reduce or eliminate the need for subtractive processes in manufacturing, lowering material losses and reducing the cost of the final product. [ 1 ]
A synthetic metal made by Osnomians. Vastly superior to the best steel. Usually transparent, but substances may be added to make it colored or opaque. Requires salt, which is very rare on Osnome, as a catalyst in its manufacture. [17] Arsonium I Expect You to Die: Green liquid with symbol Ar and atomic number 7.
In 1976, Dale McMurray and Larry Westfall were brought on as additional business partners. In that same year, the first Total Gym TV commercial hit the market. [2] In 1988, Total Gym moved into the physical therapy field, and [citation needed] as of February 2022 most or all of the home equipment line is made in China. [citation needed]