In the movie Avatar<\/i>, one of the floating mountains has a waterfall, at which my suspension of disbelief groaned: there’s not enough rain catchment area, and obviously there can’t be a spring.<\/p>\n
But now I thought of a possibility. There wasn’t any sign that the waterfall flows continuously<\/em>. So maybe the mountain has a concavity (however shallow), which spills over when something – such as a steady wind from one direction – tips it.<\/p>\n","protected":false},"excerpt":{"rendered":" In the movie Avatar, one of the floating mountains has a waterfall, at which my suspension of disbelief groaned: there’s not enough rain catchment area, and obviously there can’t be a spring. But now I thought of a possibility. There … Continue reading