thumbs.pro : coolsciencegifs: 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!) source

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$coolsciencegifs: Polymer absorbs water and expands. It keeps almost the same refractive properties as water and appears invisible. The polymer is Sodium Polyacrylate (thank you, thecraftychemist!) source$

published on: 2014-03-13 04:53:13

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