Physics Question #74

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?

viewed 15676 times

The answer

Barry Shell answered on September 30, 1999

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:

Add to or comment on this answer using the form below.

Note: All submissions are moderated prior to posting.

If you found this answer useful, please consider making a small donation to