TMW Plasma Ball
Tesla himself called his invention an “inert gas discharge tube”. Plasma lamps are also known as plasma globes, plasma balls or plasma spheres. They come in various shapes such as cylindrical. Although there are countless variations, the principle remains the same. A plasma lamp is usually a transparent glass sphere filled with a mixture of various gases at low pressure. A high-frequency alternating current is applied, with a considerably smaller sphere at the centre serving as the electrode.