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Naturally occurring platinum and platinum-rich alloys were known by pre-Columbian Americans for many years. [5] However, even though the metal was used by pre-Columbian peoples, the first European reference to platinum appears in 1557 in the writings of the Italian humanist Julius Caesar Scaliger (1484–1558) as a description of a mysterious metal found in Central American mines between ...
This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium.
In the binary formats, PBM uses 1 bit per pixel, PGM uses 8 or 16 bits per pixel, and PPM uses 24 or 48 bits per pixel: 8/16 for red, 8/16 for green, 8/16 for blue. Application support for the 16 bit variants is still rare. PGM and PPM documentation defines that gray and color values use the BT.709 color space and gamma transfer
Platinum group metals, six metallic elements grouped together on the periodic table of the elements Probabilistic graphical model , which can be directed or undirected Computers
The 1861–2007 graph uses yearly averages, and I couldn't think of a really satisfying way to incorporate the price jumps of the past couple of months. Anyway, I think it's alright for a graph of 150 years of history to wait until the year's end to incorporate its data.
Line chart showing the population of the town of Pushkin, Saint Petersburg from 1800 to 2010, measured at various intervals. A line chart or line graph, also known as curve chart, [1] is a type of chart that displays information as a series of data points called 'markers' connected by straight line segments. [2]
Date/Time Thumbnail Dimensions User Comment; current: 14:31, 3 August 2024: 5,498 × 1,016 (141 KB): Chiswick Chap: rm embedded caption, we already get a caption below the image
Norilsk Nickel had bought a 51% stake in Stillwater in 2003, but in November 2010 Norilsk Nickel announced plans to sell this stake. [2] The South African mining company Sibanye Gold Limited proposed in December 2016 to acquire Stillwater for $2.2 billion ($18/share, a 61-percent premium over its average share price during the previous 52 weeks).