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THE SHAPE OF THINGS -- SCREENCAP GALLERY |
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Here's one three-way joint. Here's another. Here's another. They enclose a six-sided figure. It's hexagonal, as are most of the bubbles on the surface of this froth. It's shaped like an ice-crystal, but it doesn't come from freezing. It comes from the physical pressure of bubbles crowding together.
Single bubbles made like this start as hemispheres.
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