reactant

(re-ak-tent) n. 1: A substance that enters into and is altered in the course of a chemical reaction. 2: The starting material in a chemical reaction.

Power Reactant Storage Assemblies are sets of oxygen and hydrogen tanks that provide reactants for electrical power generation and basic life support to the shuttle crew.

by J. Kissling July 21, 2008

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capacitive reactance

Capactive reactance is the analysis of an alternating-current electrical circuit (for example a RLC series circuit), reactance is the imaginary part of impedance, and is caused by the presence of inductors or capacitors in the circuit. Reactance produces a phase shift between the electric current and voltage in the circuit.

This is determined by the equation XC=1/2piFC XC is an impedance and is measured in ohms.
*capacitive reactance

by Nicker Doodle Doo May 29, 2007

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