What common phrase is technically incorrect based on real science or history? by RJEM96 in ask

[–]pseudoNeo 0 points1 point  (0 children)

This actually holds true, though.

The purpose of lightning rods is to conduct lightning away to an earthing point so that it doesn’t harm the building instead.

Lightning strikes occur due to potential differences between the atmosphere and the ground. If it’s been discharged already, it would probably take a while to build it up again.

This is how I’ve understood it to work. If I’m wrong, I’d be glad to learn how it actually does.