This coconut oil melted during a heat wave and later re-solidified. Why did it form this honeycomb structure ? : askscience

How does columnar basalt form ? Tabletop demonstration, using coconut oil and involving Voronoi diagrams - and full explanation at ▻https://www.reddit.com/r/askscience/comments/3i1vd0/this_coconut_oil_melted_during_a_heat_wave_and/cucmjfk

#geology #chemistry #physics #géologie #chimie #physique