Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged. ... The rubbing of certain materials against one another can transfer negative charges, or electrons.
1) the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.
2) Several feet of concrete or a few inches of dense material (such as lead) are able to block radiation.<span>
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