A part of me cares for those little water vapor bubbles. Somewhat the insides, but even more for all the shapes they go through on the way from the bottom of the pot all the way to the top.
They bump into other bubbles, which changes their shapes. Sometimes a bunch of them join together and absorb smaller bubbles. Sometimes the little bubbles escape and go their own way and they’re able to make their own shapes on THEIR way to the top.
When they get to the surface and lose their shapes, they join together in new ways that we can barely see.
There is ONE way we can see what happens after they make it past the skin of water tension that leads to the outside world – : http://en.wikipedia.org/wiki/Schlieren_photography – that measures air density. I’d love to have glasses that could see that.