Paschen Breakdown Voltage
Paschen's law is an equation that gives the breakdown voltage, that is, the voltage necessary to start a discharge or electric arc, between two electrodes in a gas as a function of pressure and gap length. It is named after Friedrich Paschen who discovered it empirically in 1889. Paschen studied the breakdown voltage of various gases between parallel metal plates as the gas pressure and gap distance were varied: * With a constant gap length, the voltage necessary to Electric arc, arc across the gap decreased as the pressure was reduced and then increased gradually, exceeding its original value. * With a constant pressure, the voltage needed to cause an arc reduced as the gap size was reduced but only to a point. As the gap was reduced further, the voltage required to cause an arc began to rise and again exceeded its original value. For a given gas, the voltage is a function only of the product of the pressure and gap length. The curve he found of voltage versus the pressure-gap ...
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Paschen Curves
Paschen may refer to: * Friedrich Paschen (1865–1947), German physicist ** Paschen (crater), a lunar crater on the far side of the Moon ** Paschen-Back effect, the splitting of atomic energy levels in the presence of a strong magnetic field ** Paschen series, a Hydrogen spectral series in the infrared band ** Paschen's law, an equation that gives the breakdown voltage, that is the voltage necessary to start a discharge or electric arc, between two electrodes in a gas as a function of pressure and gap length {{Disambig ...
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