Parameter Tree:
EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC ELECTRICITY > ELECTRIC FIELD

Definition:
The region in which electric forces can be observed, e.g. near an
electric charge. As a field, it may also be viewed as a region of space
modified by the presence of electric charges.


Reference:
International Solar-Terrestrial Physics Science Initiative, NASA Goddard Space
Flight Center, http://www-istp.gsfc.nasa.gov