If you think of a gas discharge you're probably not imagining a rainbow of colorful squiggles, unless you light one up of course. So here you go, Nikola Tesla injected some inert gas with high-frequency currents and look at the fireworks go! Depending on the gas mixture, the discharge could sometimes be blue, sometimes purple or orange or magenta. And you thought the smeller was the feller.

06.23.17