How far away was that lightning? Here's how to figure it out.

How far away was that lightning? Here's how to figure it out.

lightning behind desert cactus

Light speed is almost instantaneous, while sound is much slower.

You probably do it. It might be ingrained from when you were a kid, and now it’s almost automatic. You see the flash of lightning—and you immediately start counting the…

Source: sceince

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