I find 2 particularly interesting, because it matches my experience, but I have no idea what mechanism drives the system into discrete-ish states. Now I think about it, clouds seem related: we often see a “partly cloudy” sky with lots of discrete clouds scattered around and empty space between them, rather than a uniform less-concentrated cloudiness throughout the sky. That suggests bistability in cloud formation. What’s up with that?
I find 2 particularly interesting, because it matches my experience, but I have no idea what mechanism drives the system into discrete-ish states. Now I think about it, clouds seem related: we often see a “partly cloudy” sky with lots of discrete clouds scattered around and empty space between them, rather than a uniform less-concentrated cloudiness throughout the sky. That suggests bistability in cloud formation. What’s up with that?