# Does my ferrofluid party trick make sense?

Specifically, will ferrofluid at the bottom or on the sides of a shot glass perturb the fluid above it to any significant degree? I want a character of mine who is a sort of Bill Nye/Neil DeGrasse Tyson expy to show off a party trick using ferrofluid that he calls "The Real Corona". What he does is pour ferrofluid into the bottom of a shotglass, fills it near to the brim with vodka, lights it on fire and then introduces a magnet which he uses to turn the flaming alcohol into a roiling facsimile of the Sun's surface by manipulating the ferrofluid underneath it with a magnet.

Would this work the way I imagined it? Could you do anything impressive with the flames from a flaming shotglass if you filled the bottom with ferrofluid? Please let me know if this belongs in Physics Stack Exchange, although I expect the answer isn't too complicated. I'm kinda just asking to double check that this works like I thought it might ^^'

• There's a simpler solution to this. Try it and see, let us know how it goes. Commented Nov 8, 2016 at 18:16
• I hope you realize that you just gave about 1000 geeks and nerds an idea involving alcohol and fire. Commented Nov 8, 2016 at 18:38
• In other news, however, it will most likely not work. My suspicion is that the second you mix it, you'll extinguish the fire. Commented Nov 8, 2016 at 18:41
• Remember that flame is a surface phenomenon. In order to roil the flame, you need the vodka either to be in a thin film on top of the ferrofluid, which then gyrates wildly - in which case the fire goes out quickly. Or you need a very complicated structure created by the ferrofluid - which a simple magnet could not induce. Commented Nov 8, 2016 at 20:26
• How complicated? Assume we have the kind of neodynium magnets on hand you see in hard drives to perform the trick (if you're already nerdy enough to be carrying ferrofluid around with you on the off chance you get to show it off at a party, chances are you're also the kind of person who'd carry around hard drive magnets). Commented Nov 8, 2016 at 20:53