Video: I don’t think it’s possible to make anything cooler with your own two hands than this homemade multicolour fire tornado that spins around and weaves itself together with absolutely no moving parts. The only thing you need to do is cut up a glass cylinder and then offset the half-cylinders a little bit to let air flow do its thing to create the fire vortex.
Watch the video to see The Backyard Scientist mess around and burn different chemicals (like methanol, lithium and boric acid) to showcase the different colours (like bright red and green) a fire tornado can be.