Effective DamageThat damage necessary to render a target element inoperative, unserviceable, nonproductive, or uninhabitable.
EffectivityA designation given to the BMDS configuration and demonstrated capability at a point in time, becoming effective at each increment when an element or…
Effluent PlumeThe pathway of movement of effluents through surface water or air.
Elastic RangeThe stress range in which a material will recover its original form when the force (or loading) is removed.
Electro-Optics Infrared (EO/IR)Technologies/techniques employed by optical sensors in the wavelength spectrum slightly longer than visible but shorter than radio. 92
Electromagnetic Compatibility (EMC)A condition when all electromagnetic emissions from electronic, electro-magnetic, and electro-optical components of a system interact without interfering…
Electromagnetic EmanationsSignals transmitted as radiation through the air, through a vacuum, or through conductors.
Electromagnetic Field (EMF)(EMF)The electrical and magnetic fields created by the presence or flow of electricity in an electrical conductor or electricity consuming appliance or motor.
Electromagnetic Gun (EMG)A gun in which the projectile is accelerated by electromagnetic forces rather than by an explosion, as in a conventional gun.
Electromagnetic Interference (EMI)Any electromagnetic disturbance that interrupts, obstructs, or otherwise degrades or limits the effective performance of electronics/electrical equipment.
Electromagnetic Pulse (EMP)The electromagnetic radiation from a nuclear explosion caused by Comptonrecoil electrons and photoelectrons from photons scattered in the materials of the…
Electromagnetic Radiation (EMR)(1) A form of propagated energy, arising from electric charges in motion that produces a simultaneous wavelike variation of electric and magnetic fields…
Electromagnetic SpectrumThe entire range of wavelengths of electromagnetic energy, including (from short to long wavelengths) gamma rays, X rays, ultraviolet light, visible…
ElectromagneticsApplication of electrical, electronic, and magnetic phenomena to develop devices used in system/subsystem design, excluding employment in the RF spectrum.
Electronic Counter- Countermeasure s (ECCM)That division of electronic warfare involving actions taken to insure friendly effective use of the electromagnetic, optical, and acoustic spectra despite…
Electronic Counter- Countermeasures (ECCM)That division of electronic warfare involving actions taken to insure friendly effective use of the electromagnetic, optical, and acoustic spectra despite…
Electronic Countermeasure (ECM)That division of electronic warfare involving actions taken to prevent or reduce an enemys effective use of the electromagnetic spectrum.
Electronic Warfare (EW)Any military activity involving the use of electromagnetic and directed energy to control the electromagnetic spectrum or to attack the enemy.
Electronic Warfare (EW) EnvironmentsElectronic warfare environments result from radar and communications jamming and other related electromagnetic countermeasures and countercountermeasures .
Electronics Intelligence (ELINT)Technical and geo-location intelligence derived from foreign non-communications electromagnetic radiations emanating from other than nuclear detonations…
Electronics Security (ELSEC)The protection resulting from all measures designed to deny unauthorized persons information of value that might be derived from their interception and…
element(EH-leh-ment) A basic part of a whole. In chemistry, refers to a simple substance that cannot be broken down into smaller parts or changed into another…
Element Capability Specification (ECS)A document that identifies the element-level BMDS capabilities and specifications necessary to achieve the system capabilities identified in the SCS.
Emanations Security (EMSEC)The protection that results from all measures designed to deny unauthorized persons information of value that might be derived from intercept and analysis…
Emission Control (EMCON)The selective and controlled use of electromagnetic, acoustic, or other emitters to optimize command and control capabilities while minimizing: a)…