Thursday, March 4, 2010

What is CORONA ?

when an alternating potential is applied across two conductors whose spacing is large as compared to their dimaters, there is no appparent charger i n the condition of atmosphereic air surroundingthe wire if the applied voltage is low.

However , when the appiled voltage exceeds a certain value,called "critical disruptive voltage", the conductors are surrounded by a faint violet glow called "Corona".

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