I don't really know how to answer this, but just know that it does. And it does it well. The genesis rbas are entirely dependent on your ability to roll a wick and build a coil. I honestly believe that an rsst is just as good as an ac9. You just have to know how to build it. If you roll it right, it will wick. Something about capillaries and holes and 400 and 500 and whatnot and this and that is all i know. I don't get technical, i roll it, it works, the end. If you have any questions on how to roll it up PM me and I'll be glad to help, but on the actual mechanics that make the
juice suck into the wick, I don't know, maybe there is a physics major out there that can help.