A spark gap separates two electrodes; sufficient electric potential difference can cause an electrical discharge through the intervening gas.
A spark gap is an electrical component that consists of two electrodes separated by a small distance, allowing an air gap or an insulating medium between them. When a high enough voltage is applied across the electrodes, the electric field becomes strong enough to ionize the gas or air in the gap, creating a conductive path. This results in a spark or arc discharge, allowing current to flow across the gap briefly.
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