Answer
SURFACE TENSION
表面張力
WINDOW QUESTION · ANSWERSTEAM SQUAD
The question
WHICH PHYSICAL PROPERTY CHANGES WHEN SOAP TOUCHES THE GLUE, DRIVING THE COLOUR OUTWARD?
洗碗精碰到膠水後，是哪個物理性質的改變帶動色素散開？
Why it works
SOAP LOWERS IT AT THE CONTACT POINT, AND THE DIFFERENCE DRIVES THE DYE INTO BRANCHING PATTERNS
洗碗精降低接觸處的表面張力，張力差帶動色素形成分枝圖案
See it in action · FRACTAL ART IN GLUE
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