| |
| | battery, electric on Encyclopedia.com (Site not responding. Last check: 2007-11-05) |
 | | device that converts chemical energy into electrical energy, consisting of a group of electric cells that are connected to act as a source of direct current. |
 | | A cell consists of two dissimilar substances, a positive electrode and a negative electrode, that conduct electricity, and a third substance, an electrolyte, that acts chemically on the electrodes. |
 | | The two electrodes are connected by an external circuit (e.g., a piece of copper wire); the electrolyte functions as an ionic conductor for the transfer of the electrons between the electrodes. |
| www.encyclopedia.com /html/b1/battryE1lec.asp (1334 words) |
|