eli5: How does electricity “know” the shortest path

901 viewsOtherPlanetary Science

I’ve always heard that electricity follows the shortest path – for instance, lightning will use your body for a conduit if you’re the tallest thing around. How exactly does that work?

In: Planetary Science

13 Answers

Anonymous 0 Comments

It doesn’t — not really. Electricity starts out by taking *all* paths, and over (a very short) time, the electromagnetic field surrounding the paths in question “probes” the paths to determine how it should settle down. AlphaPhoenix has [a rather good video](https://youtu.be/2AXv49dDQJw) where he goes into this in some depth.

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