[Anthony Garofalo] has made a fancier plasma speaker. Not content with a simple spark, he uses a plasma vortex. To make the vortex, the spark gap is swapped out for an electrode placed in the centre ...

A long, looping filament of plasma snapped over the sun's north pole, creating a 'polar vortex' that scientists can't explain. When you purchase through links on our site, we may earn an affiliate ...