What is electrode?

Electrode is a conductor of electricity through which current enters or leaves a medium.
central terminal e. In electrocardiography, one in which the wire connections from the two arms and left leg are fastened together and connected to the electrocardiograph to form the indifferent electrode.
exploring e. In electrocardiography, electrode that is placed on the chest near the heart
region and paired with an indifferent electrode.
glass e. An electrode made of a thin-walled glass bulb containing a platinum wire, a standard buffer solution, and quinhydrone; used in determining hydrogen ion concentrations.
hydrogen e. An electrode considered the ultimate standard of reference in all hydrogen
ion determinations; made by partly immersing platinum black in platinum and allowing it to absorb hydrogen to saturation.
indifferent e. In electrocardiography, an electrode having multiple terminals.

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