Remember that an atom doesn't weigh very much, and the electron is a very small part of an atom. This means an electron has almost no weight.
Electrons not attached to the orbit of an atom are known as free electrons.
A property fact of free electrons is they move at a very high speed (about 186,000 mi. per second) traveling through metal, many gases, or a vacuum.
If an electron isn't flying around, it can rest on a surface.
When a few trillion free electrons are sitting around on a surface, this is known as a negative static electrical charge.
By using friction, light, chemicals, or heat it is possible to create a surface with a positive static electrical charge.
If you ever walked across carpet and felt the static electricity make you jump as you reached for a light switch, you experienced creating electricity by mechanical friction. Electricity behaves the same way a magnet does. That is to say opposite charges attract, like charges repel.
Home - Table Of Contents - Contact Us
CertiGuide to A+ (Core Hardware) (http://www.CertiGuide.com/aplush/) on CertiGuide.com
Version 1.0 - Version Date: December 6, 2004
Adapted with permission from a work created by Tcat Houser.
CertiGuide.com Version © Copyright 2004 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.