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current-stable element

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  • Current source — Figure 1: An ideal current source, I, driving a resistor, R, and creating a voltage V A current source is an electrical or electronic device that delivers or absorbs electric current. A current source is the dual of a voltage source. The term… …   Wikipedia

  • Stable marriage problem — In mathematics, the stable marriage problem (SMP) is the problem of finding a stable matching mdash; a matching in which no element of the first matched set prefers an element of the second matched set that also prefers the first element.It is… …   Wikipedia

  • Chemical element — The periodic table of the chemical elements A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus.[1] Familiar examples of …   Wikipedia

  • Mercury (element) — gold ← mercury → thallium Cd ↑ Hg ↓ Cn …   Wikipedia

  • rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

  • transuranium element — Any of the chemical elements after uranium in the periodic table (with atomic numbers greater than 92). All are radioactive (see radioactivity), with half lives ranging from tens of millions of years to fractions of a millisecond. Only two,… …   Universalium

  • Period 2 element — A period 2 element is one of the chemical elements in the second row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the… …   Wikipedia

  • Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare …   Wikipedia

  • Synthetic element — In chemistry, a synthetic element is a chemical element that is too unstable to occur naturally on Earth, and therefore has to be created artificially. So far 30 synthetic elements have been discovered that is, synthesized. Six of them are quasi… …   Wikipedia

  • Primordial element — In geochemistry , Primordial elements are chemical elements found on the earth that have existed in their current form since before the earth was formed, according to accepted stellar evolution theory. This means that the half life on the given… …   Wikipedia

  • Transposable element — A bacterial DNA transposon Transposable elements (TEs) are sequences of DNA that can move or transpose themselves to new positions within the genome of a single cell. The mechanism of transposition can be either copy and paste or cut and paste .… …   Wikipedia

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