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Pocket Artillery: Mini Cannon
That was so much more impressive than I expected

lulz-time:

Pocket Artillery: Mini Cannon

That was so much more impressive than I expected

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lulz-time:

Polymer absorbs water and expands. It keeps almost the same refractive properties as water and appears invisible.

The polymer is Sodium Polyacrylate (thank you, thecraftychemist!)

Featured on a 1000Notes.com blog

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