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impurity |
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impurity Electronics a small quantity of an element added to a pure semiconductor crystal to control its electrical conductivity impurity [im′pyu̇r·əd·ē] (science and technology) An undesirable foreign material in a pure substance. (solid-state physics) A substance that, when diffused into semiconductor metal in small amounts, either provides free electrons to the metal or accepts electrons from it. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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what perturbation and what evil thoughts, not seeing underneath the sorrows of impermanence, the impurity, the unreality But at the same time just this aim demands the greatest efforts of us; and so, led astray by pride, losing sight of this aim, we occupy ourselves either with the mystery which in our impurity we are unworthy to receive, or seek the reformation of the human race while ourselves setting an example of baseness and profligacy. Kasatsky belonged to those men of the eighteen-forties (they are now no longer to be found) who while deliberately and without any conscientious scruples condoning impurity in themselves, required ideal and angelic purity in their women, regarded all unmarried women of their circle as possessed of such purity, and treated them accordingly. |
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