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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 ...
The energy market [31] sets prices, paid to generators and paid by consumers, for the many GWhrs of electrical energy delivered on the PJM grid. The price is determined by using nodal pricing, also known as locational marginal pricing. [32] PJM publishes a map of energy price levels throughout its area. [33]
Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements. It has six naturally occurring isotopes . It is one of the rarer elements in Earth's crust , with an average abundance of approximately 5 μg /kg.
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]
Point and figure (P&F) is a charting technique used in technical analysis.Point and figure charting does not plot price against time as time-based charts do. Instead it plots price against changes in direction by plotting a column of Xs as the price rises and a column of Os as the price falls.
An open-high-low-close chart (OHLC) is a type of chart typically used in technical analysis to illustrate movements in the price of a financial instrument over time. Each vertical line on the chart shows the price range (the highest and lowest prices) over one unit of time, e.g., one day or one hour.
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
PGM Précision (styled as PGM PRECISION) is a French company manufacturing high-precision rifles for military, law enforcement and sporting usages. Models include: PGM Hécate II (12.7×99mm NATO / .50 BMG), .416 Barrett/10.6×83mm [1] PGM 338 (.338 Lapua Magnum / 8.6×70mm) [2] PGM Ultima Ratio (7.62×51mm NATO as main military chambering)