Fascinating and fun! USB Plasma Ball is fascinating to watch and even more fun to play with. Placing a fingertip on the glass creates an attractive spot for the energy to flow, because the conductive human body is more easily polarized than the dielectric material around the electrode providing an alternative discharge path having less resistance. The Plasma Ball is great for kids of all ages. Whether you are a fun loving work professional or a parent who wants their kids to learn about static electricity without the need to google Tesla’s high voltage plasma globe. It can generate colorful streams of electricity dance across the surface of whole globe like atmosphere, perfectly demonstrating physics science. Place your finger on the glass surface and watch as colored bolts of glowing light follow your every move. Pretend to be a mad scientist with this ball! Kids will love seeing what happens when you touch it! USB power sphere with colored lightning flashes!