Mind-Bending Math & GamesGeometry
Why Bubbles Are Round
A sphere holds the most air with the least skin
Blow through a square wand and the bubble still floats away round. So what is the soap film up to?
You'll find out
- Why the wand's shape doesn't matter
- What a soap film always tries to do
- What happens where two bubbles meet
Why it matters
Soap finds the cheapest shape in a blink. The same rule shapes raindrops, foams and the froth on your coffee.
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