this post was submitted on 21 Dec 2024

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[Video] Breaking ice with a firecracker (imgur.com)

submitted 1 day ago* (last edited 1 day ago) by [email protected] to c/interestingshare

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Source: https://imgur.com/gallery/crack-Ty4HrUL

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[–] [email protected] 6 points 1 day ago

I'm making an educated guess here...

The initial blast was along the grain of the crystals, the delayed cracks come from the shockwave travelling back after hitting the bottom of the lake and striking the ice at a diffuse range of angles.