It has recently been shown 1 that in the lightning discharge a preliminary discharge from cloud to ground occurs before the passage of the main stroke in the reverse direction. The luminous ...

IT has long been known that the ordinary spark discharge between spherical electrodes exhibits numerous side-branches which are forked away from the positive pole. Similar branching, almost always ...

with the C being charged until the spark gap triggers, forcing the subsequent discharge of the capacitor and causing the spark to extinguish and the cycle to repeat. The resulting chain of high ...