This heating helps to break down weak spots in the dielectric that otherwise might pass through the electrode undetected, only to fail during a later spark or hipot test.
A commercial passenger plane has been forced to make an emergency landing in Somalia after an explosion ripped a hole in its fuselage. Orlando Teal has the details.
Look at this, we're generating so many millions of volts on these domes that that voltage has to escape, and it's actually ripping molecules in the air apart.
Chapter 4: The Climactic Discharge Once the electrical tension surpasses the air's breakdown voltage, a path of ionized air, called a " step leader, " descends from the cloud.
There's been a lot of Allosaurus specimens found that have wounds on them, damage from having their foot crushed by another dinosaur or holes punctured in their tail from a spikes of a Stegosaurus.
Fantastic? Well, during the First World War, Paul Kern, a Hungarian soldier, was shot through the frontal lobe of his brain. He recovered from the wound, but curiously enough, couldn't fall asleep.
Over hundreds or thousands of cycles of TMB, the paper insulation around each conductor can begin to soften or tear, eventually leading to a dielectric breakdown (in other words, arcs and short circuits).