Once the electrical stress exceeds the dielectric strength of the plastic, some portions suddenly become conductive in a process called dielectric breakdown.
22.
This is well above the dielectric breakdown threshold of air ( assuming a Nimur 05 : 58, 22 May 2007 ( UTC)
23.
This atmospheric dielectric breakdown results in the flow of electric current along a random trajectory through an ionized plasma channel between the two electrodes.
24.
The positive feedback increases the accumulating charges exponentially until the dielectric breakdown voltage of the air is reached and an electric spark jumps across the gap.
25.
Reflections also introduce standing waves, which cause increased losses and can even result in cable dielectric breakdown with high-power transmission ( see Impedance matching ).
26.
Branching morphogenesis has been found to follow the dielectric breakdown model, in that only the vessels with sufficient flow will enlarge, while others will close off.
27.
Fulgurites are homologous to Lichtenberg figures, which are the branching patterns produced on surfaces of insulators during dielectric breakdown by high-voltage discharges, such as lightning.
28.
The advantage of plasma acceleration is that its acceleration field can be much stronger than that of conventional radio-frequency ( RF ) dielectric breakdown of the acceleration tube.
29.
The laser energy reduces the atmospheric dielectric breakdown voltage and the air is made less insulating by superheating, which lowers the density ( p ) of the filament of air.
30.
Tiny perturbations in air pressure ( chaotic variations of nano-meter size ) between air particles dictate which air parcel will be most susceptible to instantaneous dielectric breakdown and ionization.
