10 points | by fanf2 20 hours ago
1 comments
all/most materials can be foamed, ALL foam bubbles aproximate a very specific shape where each intersection is at the SAME angle, which is not 90° so at minimum there are two "universal geometrys", and yes there are natural rock foams.
all/most materials can be foamed, ALL foam bubbles aproximate a very specific shape where each intersection is at the SAME angle, which is not 90° so at minimum there are two "universal geometrys", and yes there are natural rock foams.