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Wolfram Alpha: Wolfram Research: 2009 2013: Pro version: $4.99 / month, Pro version for students: $2.99 / month, ioRegular version: free Proprietary: Online computer algebra system with step-by step solutions. Xcas/Giac: Bernard Parisse 2000 2000 1.9.0-99: May 2024: Free GPL: General CAS, also adapted for the HP Prime. Compatible modes for ...
free, $2500 (Pro, commercial), $1000 (Pro, academic) Proprietary: interactive graphics TK Solver: Universal Technical Systems, Inc. late 1970s 1982 6.0.152 2020: $599 commercial, $49 (student) Proprietary: Numerical computation and rule-based application development VisSim: Visual Solutions 1989 10.1 January 2011: $495-$2800 (commercial) free ...
The name tungsten (which means ' heavy stone ' in Swedish and was the old Swedish name for the mineral scheelite and other minerals of similar density) is used in English, French, and many other languages as the name of the element, but wolfram (or volfram) is used in most European (especially Germanic and Slavic) languages and is derived from ...
This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. ... Tungsten: 19.25: 1.3 (3.601 ...
Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering [7] for use in industrial machinery, engineering facilities, [8] molding blocks, [9] cutting tools, chisels, abrasives, armor ...
"Wolfram" is an alternate name for tungsten, a strategic material used in anti-tank weapons and machine tools. Most of the wolframite mines in Europe, such as the Barruecopardo mine, are in northwestern Spain and northern Portugal. [a] The high demand for this scarce strategic mineral in war time had created a bubble in prices, with the ...
Wolfram may refer to: Wolfram (name), a Germanic masculine given name and a surname (includes a list of people with the name) Wolfram (musician), an Austrian DJ; Wolfram (element), the original name for the chemical element best known as tungsten; Wolfram Research, a software company known for the symbolic computation program Mathematica
Scheelite is widely used in phosphors, [12] particularly in scintillators for X-ray and gamma-ray detection. [13] It is also utilized in fluorescent lighting systems for its ability to convert ultraviolet light into visible light. [14] In some cathode ray tubes (CRTs), calcium tungstate (Scheelite) is used as a phosphorescent screen material. [15]