Capturing Lightning: High-Speed Images Reveal How Lightning Rods Work
Rare images of lightning bolts in Brazil have helped researchers understand how lightning rods work. Lightning strikes can be as long as 100 kilometers and transport currents as strong as 30,000 amps. Lightning rods do not repel or attract electrical discharges but provide lightning with an easy and safe route to the ground. Vulnerable people are advised to take shelter during thunderstorms.