With the Smithsonian Plasma Ball, you can enjoy an incredible atomic light show right at your fingertips. This 5-inch glass sphere is filled with gases like neon and xenon, with a high-voltage electrode in the center. Plug it in, turn it on and watch what happens when atoms collide with each other and energized electrons. Watch your fingertips create amazing light effects as you see for yourself how colliding atoms release energy in the form of light waves. Recommended for ages 14+, the plasma ball also responds to sound and music and comes packaged with STEM educational content. Requires 6 AA (1.5V) batteries (included).