TI-89 series — The TI 89 and the TI 89 Titanium are graphing calculators developed by Texas Instruments. They are differentiated from other graphing calculators by their powerful computer algebra system, which allows symbolic manipulation of algebraic… … Wikipedia
Calculator — For mechanical precursors to the modern calculator, see mechanical calculator. For other uses, see Calculator (disambiguation). An electronic pocket calculator with a 7‑segment LCD display, that can perform basic arithmetic operations … Wikipedia
analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… … Universalium
Laptop — A desktop replacement laptop with its 18.4 inch screen showing its technical specifications. A laptop, also called a notebook,[1][2] is a personal computer for … Wikipedia
Negative index metamaterials — A negative index metamaterial causes light to refract, or bend, differently than in more common positive refractive index materials. Negative index metamaterials or negative index materials (NIM) are artificial structures where the refractive… … Wikipedia
Tetris — Tetяis redirects here. For the Tengen produced game, see TETЯIS: The Soviet Mind Game. Tetris The box of the Nintendo version of Tetris for the NES. Developer(s) Alexey Pajitnov (E60 prototype), Vadim Ge … Wikipedia
B. F. Skinner — Burrhus Frederic Skinner Born March 20, 1904(1904 03 20) Susquehanna, Pennsyl … Wikipedia
Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass … Wikipedia
Academic dishonesty — or academic misconduct is any type of cheating that occurs in relation to a formal academic exercise. It can include Plagiarism: The adoption or reproduction of original creations of another author (person, collective, organization, community or… … Wikipedia
Barometer — Schematic drawing of a simple mercury barometer with vertical mercury column and reservoir at base … Wikipedia
Oscilloscope — This article is about current oscilloscopes, providing general information. For history of oscilloscopes, see Oscilloscope history. For detailed information about various types of oscilloscopes, see Oscilloscope types. Illustration showing the… … Wikipedia