Ice spikes may very well be the perfect untraceable weapon, but how do these jagged sticks of frosty death form? Turns out there’s no magic involved (womp), just some simple physics.

Image: Shulevskyy Volodymyr via Shutterstock

Ice cubes freeze from their outer edges inward, expanding as they go. Sometimes, this process squeezes the water in the middle of the cube up and out the top, forming a small protrusion that eventually grows into a long, sharp stick as freezing continues and more water is forced to escape.

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Watch the video to see ice spike formation in happen, and learn more about how you can coax your water into forming some awesome death spears of its own. Please use responsibly.

[IFL Science]


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