Margaret Klima, a 44 year old female from the Internet asks on September 30, 1999,What are the globes which, when you puts your hand close to them, display electrical energy resembling lightning? How do they work?
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This phenomenon is called plasma spheres, based on the generation of very high voltage (10,000V) but with very little current (1 milliamp) to create static electricity which ionizes a gas, typically an inert gas like helium or neon. To find out more and even how to make one, check out the following website: http://www.amasci.com/tesla/plasplan.html.
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