[LukeL]

During another CME in the mid 1800s it was reported that telegraph lines were sending info with the circuits open, and that blue sparks were arcing off of the lines for hours.

Now imagine that with our power and communications grid. Trillions of dollars in electronic equipment could be fried, transformers rendered useless, etc.

[Telepathic Intruder]

The reason that happened was because telegraph lines were hundreds of miles long without interruption, so otherwise tiny charges could build up with distance.

[mazda77]

Be mindful that we have also learned a great deal about grounding since then as well. Are you aware of how and why capacitors work?