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Technical
Glossary - E
| A
| B | C
| D | E | F
| G | H
| I | J,K
| L | M
| N | O
| P | Q
| R | S
| T | U,V
| W,X,Y,Z | Spec.
Char., Number |
ECCM
(See "electronic counter-counter measures")
ECM
(See "electronic countermeasures")
Electric
Current
The movement of electric charge carriers in a
medium.
Electric
Field
Electric forces within a physical volume.
Electrical
Length
Physical length expressed in terms of the wavelength
of a signal for the medium in which the component
or structure is situated. The units are degrees,
radians or grads.
Electromagnetic
Field
Electric and magnetic forces that exist in a physical
volume.
Electromagnetic
Radiation
The emanation of an electromagnetic field from
a source through space.
Electromotive
Force
The force that causes charge carriers to move
from a location with high potential to a location
with lower potential.
Electron
A subatomic particle that orbits the nucleus of
an atom. Electrons have a negative charge. The
charge of a single electron is -1.6 * 10-19 coulombs.
When electrons escape from the immediate confines
of an atom and move through a material, this motion
constitutes electric current.
Electronic
Counter-countermeasures
The defensive use of electronic warfare to counteract
an opponent's electronic countermeasures.
Electronic
Countermeasures
The offensive use of electronic warfare.
Electronic
Intelligence
The surreptitious gathering of information from
an opponent or enemy through the use of electronic
systems.
Electronic
Warfare
The use of electronic signals and systems to disrupt
the function of an opponent's surveillance, defense
or communications systems.
Electronics
The field of applied physics concerned with the
behavior of electrons, especially when they move
as current, in devices and materials.
Electrostatic
Sensitivity
The degree to which a component or device is susceptible
to damage by electrostatic discharge.
ELINT
(See "electronic intelligence")
EMF
(see "electromotive force")
Emitter
Bias
The DC voltage or current that is applied to the
emitter of a transistor to establish its operating
point.
Emitter
Current
The current that flows through the emitter of
a transistor.
Emitter
The layer of a bipolar transistor through which
all current flows and from which majority carriers
are injected into the base of the transistor,
where they are considered minority carriers.
Encapsulation
A conformal coating, typically applied to a semiconductor
die to protect it from physical damage during
handling.
Epitaxial
Of or pertaining to a layer of single crystal
material grown on a crystalline substrate, with
the same crystal orientation in both regions.
Etching
Removal of material through the use of reactive
chemicals or plasmas.
Eutectic
Solder
A solder consisting of tow or more metals, all
in the appropriate proportions to allow the lowest
possible melting point for the given combination.
Evaporation
The physical change from the liquid to the gaseous
state.
EW
(See "electronic warfare")
exa
A prefix that indicates a factor of 1018, abbreviated
as "E".
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