Engineers have discovered a brand-new, bright-blue fire tornado that behaves unlike any flame ever before created. When a fire burns yellow, it’s unclean. The warm colors are signs of an incomplete combustion reaction coughing up soot, smoke, and other emissions. When a flame glows blue, it’s a sign of a more complete, near-perfect burn with far fewer emissions.
A new kind of whirling flame that’s small, blue, and transparent â like a ghost top â offers a new way to achieve such a clean burn.Researchers had never created anything quite like this blue-and-violet fire tornado before. But now that they know how to light one, it presents some exciting opportunities.
In a paper describing the phenomenon, University of Maryland engineers suggest that a version of the blue whirl might be a cleaner way to burn off oil spills in the ocean.