V: Symbol and abbreviation of volt.
Viscosity: The resistance to flow exhibited
by a liquid or gas subjected to deformation.
Volt: Measurement unit of the electrical
potential. Symbol: "V".
Voltage: A term sometimes used interchangeably
with electrical potential. See also cell voltage.
Voltage compliance: See compliance limits.
Voltage delay: Time interval at the
start of a discharge during which the working voltage of a cell is below its
steady value. The phenomenon is generally due to the presence of passivating
films on the negative electrode.
Voltage source (supply): See electrical
Voltaic cell: See galvanic cell.
Voltaic pile (Volta pile): The first
(1800) laboratory source of electricity, essentially what we would call today
a non-rechargeable battery. Volta
assembled (piled up) different metal disks (e.g., copper and zinc) separated
by solution soaked pasteboards, repeating the pattern many tens of times. This
was essentially a battery containing many series-coupled
Daniell cells (a cell which was
a later improvement) providing rather high cell voltage and current capabilities,
but very short life time.
Voltammetry: An electrochemical measuring
technique used for electrochemical analysis or for the determination of the
kinetics and mechanism of electrode reactions. "Voltammetry" is a family of
techniques with the common characteristics that the potential of the working
electrode is controlled (typically with a potentiostat) and the current flowing
through the electrode is measured. In one of the most common applications of
the technique, the potential is scanned linearly in time; this is called the
"linear-sweep voltammetry," "LSV," or "LV." "Cyclic voltammetry (CV)" is a linear-sweep
voltammetry with the scan continued in the reverse direction at the end of the
first scan, this cycle can be repeated a number of times.
Voltammogram: Graphical representation
of the results of a voltammetric measurement.
Voltmeter: Instrument used for the measurement
of electrical potential differences.