Research topic: resistance

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resistance

The Columbia Encyclopedia, Sixth Edition
resistance property of an electric conductor by which it opposes a flow of electricity and dissipates electrical energy away from the circuit, usually as heat. Optimum resistance is provided by a conductor that is long, small in cross section, and of a material that conducts poorly. Resistance is basically the same for alternating and direct current circuits (see impedance ). However, an alternating current of high frequency tends to travel near the surface of a conductor. Since such a current uses less of the available cross section of the conductor than a direct current, it meets with m... Read more
Drug Resistance
Drug resistance Definition Drug resistance refers to the ability of an organism, such as the HIV virus...drug prescribed to destroy it. Well-known examples are the resistance of the HIV virus to AZT, or that of TB to antibiotics . Resistance... Read more
resistance
resistance. In every country occupied by Axis forces there was some degree of resistance to occupation, although, in spite of the myth to the contrary, there was never any continent-wide resistance movement, either in Europe or in Asia; each country... Read more

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