That 7 second video of a small rocket shot into a cloud to induce a lightning strike (about half way...

nomilk • today at 7:44 AM • 3 replies • view on HN

That 7 second video of a small rocket shot into a cloud to induce a lightning strike (about half way down the article) is incredible.

Any ideas why the lightning strike appears mostly green (and momentarily purple and orange)?

postalcoder • today at 11:18 AM

Copper emits a green-blue light in the flame test https://www.youtube.com/watch?v=dwsexjcROH4

deepandmeaning • today at 7:47 AM

I'm imagining it's something related to the copper wire.

teh_infallible • today at 8:38 AM

I always wanted to replicate this with a helium balloon and a long, wet string coated with copper filings.

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