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Many of the calculators in this list have region-specific models that are not individually listed here, such as the TI-84 Plus CE-T, a TI-84 Plus CE designed for non-French European markets. These region-specific models are usually functionally identical to each other, aside from minor cosmetic differences and circuit board hardware revisions.
Nickel titanium, also known as nitinol, is a metal alloy of nickel and titanium, where the two elements are present in roughly equal atomic percentages.Different alloys are named according to the weight percentage of nickel; e.g., nitinol 55 and nitinol 60.
The TI-89 and the TI-89 Titanium are graphing calculators developed by Texas Instruments (TI). They are differentiated from most other TI graphing calculators by their computer algebra system , which allows symbolic manipulation of algebraic expressions—equations can be solved in terms of variables— whereas the TI-83 / 84 series can only ...
The original TI-Nspire was developed out of the TI PLT SHH1 prototype model, the TI-92 series of calculators released in 1995, and the TI-89 series of calculators released in 1998. [2] [3] In 2011, Texas Instruments released the CX line of their TI-Nspire calculators which effectively replaced the previous generation.
Each of these elements tends to influence the hardness and weldability of the steel to different magnitudes, however, making a method of comparison necessary to judge the difference in hardness between two alloys made of different alloying elements. [1] [2] There are two commonly used formulas for calculating the equivalent carbon content.
The Ni–Al alloy is prepared by dissolving nickel in molten aluminium followed by cooling ("quenching"). Depending on the Ni:Al ratio, quenching produces a number of different phases. During the quenching procedure, small amounts of a third metal, such as zinc or chromium, are added to enhance the activity of the resulting catalyst.
Nickel is a chemical element; it has symbol Ni and atomic number 28. ... Chemistry textbooks quote nickel's electron configuration as [Ar] 4s 2 3d 8, [24] ...
Nickel(II) oxide is the chemical compound with the formula NiO.It is the principal oxide of nickel. [4] It is classified as a basic metal oxide. Several million kilograms are produced annually of varying quality, mainly as an intermediate in the production of nickel alloys. [5]