ELEMENT-- A substance, in chemistry, that cannot
ELECTROCHEMIC-- The action of converting
be divided into simpler substances by any means
chemical energy into electrical energy.
ordinarily available.
F
passes from one medium into another, such as
in an electrical cell where the current leaves or
F E R R O M A G N E T I C M A T E R I A L -- A highly
returns to the electrolyte.
magnetic material, such as iron, cobalt, nickel,
or alloys, that makes up these materials.
ELECTRODYNAMICS METER MOVEMENT-- A
meter movement using freed field coils and
FIELD OF FORCE-- A term used to describe the
total force exerted by an action-at-a-distance
phenomenon such as gravity upon matter,
ELECTROLYTE-- A solution of a substance that is
electric charges acting upon electric charges,
capable of conducting electricity. An electrolyte
magnetic forces acting upon other magnets or
may be in the form of either a liquid or a paste.
magnetic materials.
E L E C T R O M A G N E T -- A n electrically excited
FIXED RESISTOR-- A resistor having a definite
magnet capable of exerting mechanical force, or
of performing mechanical work.
FLUX-- In electrical or electromagnetic devices, a
ELECTROMAGNETIC-- The term describing the
general term used to designate collectively all
relationship between electricity and magnetism.
the electric or magnetic lines of force in a
Having both magnetic and electric properties.
region.
FLUX DENSITY-- The number of magnetic lines of
production of a voltage in a coil due to a change
force passing through a given area.
in the number of magnetic lines of force (flux
ELECTROMOTIVE FORCE (EMF)-- The force that
G
with different electrical charges or when there is
a difference of potential between the two points.
The unit of measurement in volts.
GALVANOMETER-- A meter used to measure small
values of current by electromagnetic or
electrodynamics means.
ELECTRON-- The elementary negative charge that
revolves around the nucleus of an atom.
GROUND POTENTIAL-- Zero potential with
respect to the ground or earth.
ELECTRON SHELL-- A group of electrons which
have a common energy level that forms part of
H
the outer structure (shell) of an atom.
H E N R Y ( H ) -- The electromagnetic unit of
ELECTROSTATIC-- Pertaining to electricity at rest,
inductance or mutual inductance. The
such as charges on an object (static electricity).
variation of 1 ampere per second induces 1 volt.
ELECTROSTATIC METER MOVEMENT-- A
meter movement that uses the electrostatic
smaller units are used such as the millihenry
repulsion of two sets of charges plates (one
(mH), which is one-thousandth of a henry (H),
freed and the other movable). This meter
and the microhenry (h), which is one-millionth
movement reacts to voltage rather than to
of a henry.
current and is used to measure high voltage.
AI-3