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Atmosphere

Zig-zag lightning could be mediated by metastable oxygen

21 Dec 2022
Lightning bolts
Stepping down: the zig-zag shape of lightning could be related to the presence of metastable oxygen molecules. (Courtesy: iStock/WolfeLarry)
Lightning flashes have distinctive zig-zag shapes and physicists have long wondered why. Now,  John

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Sam Jarman is a science writer based in the UK
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