A plasma ball is a clear glass container filled with a variety of noble glasses with a high-voltage electrode in the center of the container. Plasma is formed in the container when voltage is applied.
Plasma globes are used as curiosities for the tricks that can be performed on them while moving hands around them and their unique lightning effect. They are not intended for a room or general lighting. Plasma lamps form part of the laboratory equipment of a school for demonstration purposes.
When voltage is applied to a plasma ball lamp, the plasma filaments extend from the electrode to the glass creating fascinating beams of light. When touched, the lights center on the spot where it is being handled. The high concentration of electrons in a glass ball with electricity has access to the earth thereby releasing their charge into the earth through the person touching it. This is because the concentration of electrons in the earth is relatively low, so the earth tends to accept the charged particles as the earth is vast. The amount of charge in an electric ball lamp is small, assuring the user that there is no risk of getting hurt when in contact with the plasma globe lamp. Several lab experiments prove that touching a plasma electric ball for a long time gets you filled with the electrons in it to the extent that you can even light up a bulb.
In a bid to reach the earth, the charged electrons find their way to the edge. Touching these static electricity balls increases the strength of the electrons' discharge using you as a path to reach the earth and this is why the arcs in the plasma lightning ball are drawn to your hand if you touch the globe.
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