When an oil candle burns, the oil travels up the wick and to the flame. In the same way, a twisted paper towel wil move small amounts of water 'up'. Since that must take energy, (you could put it through a turbine on the way down), I'm wondering where that energy is coming from. My hypothesis is that that minute amount of energy is coming from the heat in the water because every x amount of feet that water falls down a waterfall, it gains a degree. I think this is due to friction, but at least I can assume that when water goes up, it will do the reverse. Any alternative ways of thinking?
