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Topic: Electromagnetic pulse

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	Electromagnetic pulse - Wikipedia, the free encyclopedia
		The electromagnetic radiation from an explosion (especially nuclear explosions) or an intensely fluctuating magnetic field caused by Compton-recoil electrons and photoelectrons from photons scattered in the materials of the electronic or explosive device or in a surrounding medium.
		In the case of a nuclear detonation or an asteroid impact[1], the electromagnetic pulse consists of a continuous frequency spectrum.
		To achieve the frequency characteristics of the pulse needed for optimal coupling into the target, wave-shaping circuits and/or microwave generators are added between the pulse source and the antenna.
	en.wikipedia.org /wiki/Electromagnetic_pulse (2084 words)

	Electromagnetic bomb - Wikipedia, the free encyclopedia
		An electromagnetic bomb or E-bomb is a weapon designed to disable electronics on a wide scale with an electromagnetic pulse.
		The electromagnetic pulse was first observed during high altitude nuclear weapon detonations.
		Electromagnetic weapons are still mostly classified and research surrounding them is highly secretive.
	en.wikipedia.org /wiki/Electromagnetic_bomb (459 words)

	Electromagnetic Pulse Bomb
		Another aspect of electromagnetic bomb lethality is its detonation altitude, and by varying the detonation altitude, a tradeoff may be achieved between the size of the lethal footprint and the intensity of the electromagnetic field in that footprint.
		Using electromagnetic weapons against urban areas provides the opportunity to prevent government propaganda from reaching the population via means of mass media, through the damaging or destruction of all television and radio receivers within the footprint of the weapon.
		Electromagnetic weapons however open up less conventional alternatives for the conduct of a strategic campaign, which derive from their ability to inflict significant material damage without inflicting visible collateral damage and loss of life.
	members.fortunecity.com /groom51/ebomb.html (11827 words)

	Electromagnetic Pulse Shockwaves As A result of Nuclear Pulse Propulsion
		There was nothing that I studied that had anything to do with Electromagnetic Pulse shockwaves that would result from the use of so many nuclear bombs.
		Electromagnetic Pulse is the affect of nuclear weapons that has a tendency to destroy electronics in a large area.
		This is quite a bit farther than is destructive by Electromagnetic Pulse, but this is what I determined to be the maximum area that has even the slightest effect of Electromagnetic Pulse, as it's the maximum area that is in line of sight.
	www.spacedaily.com /news/nuclearspace-03a.html (1637 words)

	The Electromagnetic Bomb - a Weapon of Electrical Mass Destruction (Site not responding. Last check: 2007-11-07)
		The ElectroMagnetic Pulse (EMP) effect [1] was first observed during the early testing of high altitude airburst nuclear weapons [GLASSTONE64].
		An electromagnetic bomb delivered by a conventional aircraft [7] can offer a much better ratio of electromagnetic device mass to total bomb mass, as most of the bomb mass can be dedicated to the electromagnetic device installation itself.
		While the relationship between electromagnetic field strength and distance from the weapon is one of an inverse square law in free space, the decay in lethal effect with increasing distance within the atmosphere will be greater due quantum physical absorption effects [10].
	www.airpower.maxwell.af.mil /airchronicles/kopp/apjemp.html (14095 words)

	ELECTROMAGNETIC PULSE RISKS AND TERRORISM
		The existence of the electromagnetic pulse has been known since the 1940's when nuclear weapons were being developed and tested.
		The technology relies on an electromagnetic pulse that may be conceptualized as an electric shockwave created when a stream of highly energetic photons collides with atoms of low atomic numbers to cause them to eject a 'pulse' of electrons.
		He serves as chairman of the Commission to Assess the Threat to the United States from Electromagnetic Pulse Attack and was director of the White House Office of Science and Technology Policy and science adviser to the president during the Reagan administration.
	www.unitedstatesaction.com /emp-terror.htm (5837 words)

	Electromagnetic pulse bomb - Wiki 24 - A Wikia wiki
		An Electromagnetic Pulse Bomb (or EMP) is a non-lethal, but highly destructive, weapon that emits an electromagnetic pulse that disables all electrical circuitry within a certain radius.
		The immediate effects of the EMP pulse lasted only two to three minutes but the systems would not be fully operational again for several hours.
		Reiss announced that they were forced to use the pulse bomb, but that CTU would probably suspect that Marwan was behind it.
	24.wikia.com /wiki/Electromagnetic_pulse_bomb (641 words)

	The Electromagnetic Pulse (EMP)
		The effects of the nuclear electromagnetic pulse must be considered and calculated when preparing for a nuclear war.
		Early on in the development of nuclear weapons, the presence of the electromagnetic pulse was known.
		Right now, "The electromagnetic pulse generator is emerging as one of the strongest contenders...to find effective weapons to defeat an enemy without causing loss of life."(30) The motive may be right, but the idea may be bad.
	www.geocities.com /CapeCanaveral/5971/emp.html (2959 words)

	The Electronic Blanket (The Electromagnetic Nuclear Bomb)
		High-altitude electromagnetic pulses (HEMP) produced by high-altitude bursts occur in an area of the atmosphere where the density of the air is low.
		The scientific principles behind generating a high-altitude electromagnetic pulse are relatively easy to understand.
		Scientists studied the effects of an electromagnetic pulse from a high-altitude nuclear blast in depth during the Cold War.
	www.heartsongs.org /Pulse (3838 words)

	ELECTROMAGNETIC PULSE THREATS TO U.S. MILITARY AND CIVILIAN INFRASTRUCTURE (Site not responding. Last check: 2007-11-07)
		These weapons as well, these nonnuclear electromagnetic weapons, have several characteristics that could make them attractive to an adversary of the U.S. On the other hand, they have the potential disadvantage of requiring closer proximity to their targets to be effective than do nuclear EMP weapons.
		At still higher electromagnetic field levels, both nuclear and nonnuclear signals can be induced that are comparable in size to the normal signal levels in a digital system, the one bit versus the zero bit, for example, injecting anomalous bits, corrupting data and/or producing system upset.
		Indeed, electromagnetic pulses, EMP, generated by high-altitude nuclear explosions have riveted the attention of the military nuclear technical community for more than three and a half decades since the first comparatively modest one very unexpectedly and abruptly turned off the lights over a few million square miles of the mid-Pacific.
	commdocs.house.gov /committees/security/has280010.000/has280010_0.HTM (15432 words)

	Sense of Wonder \| The Trestle Electromagnetic Pulse Simulator
		A B-52 bomber sits atop the TRESTLE electromagnetic pulse (EMP) simulator at Kirtland Air Force Base, New Mexico The facility is the largest wood-and-glue laminated structure in the world.
		Aircraft tested here are subjected to up to 10 million volts of electricity to simulate the effects of a nuclear explosion and assess the "hardness" of electrical and electronic equipment to the EMP pulse generated by a nuclear burst.
		One of the effects of a nuclear detonation is a nuclear electromagnetic pulse(EMP), an invisible field able to destroy every unshielded electronic device.
	www.cerezo.name /archives/000006.html (252 words)

	Low voltage electromagnetic pulse actuator (US4862043)
		The actuator further includes a coil (72) which is positionable in close proximity to the copper plate (88) of the drive (86).
		The apparatus further includes a bank of capacitors having a stored charge so as to produce a current pulse through the coil (72) when the capacitors are connected to the coil (72).
		The copper plate (88) is relatively thick compared to that used in high voltage electromagnetic actuators, such that the present apparatus requires only a relatively low voltage in order to produce the required high forces to accomplish the desired riveting.
	www.delphion.com /details?pn10=US04862043 (303 words)

	village voice > news > Weapon of the Week by George Smith
		And the most miraculous of all is the electromagnetic pulse bomb.
		Although not yet glimpsed, the e-bomb is thought to be a cruise missile, or possibly a dropped munition, fitted with a special warhead that not only explodes with a bang but also emits a burst of radio waves aimed at shorting out unshielded electronics.
		What is certain is that the Pentagon has been interested in electromagnetic pulses since it noticed at the Johnston Island test range in the late 1960s that high atmospheric nuclear explosions short-circuited electronics far from actual test blasts.
	www.villagevoice.com /issues/0306/smith.php (621 words)

	Electromagnetic Pulse Hits Central Tennessee [Free Republic]
		Electromagnetic energy can travel literally forever, at (or near) the speed of light, until something like, say, a small portion of a planet, stops it.
		Electromagnetic pulse is electromagnetic radiation that has a frequency ranging from 10 MHz to 4 GHz.
		When a TED pulse is generated it will have the ability to excite responses in systems designed to receive at any frequency from as low as 100 MHz up to several GHz, from the FM band up to the lower microwave bands.
	www.freerepublic.com /forum/a3b4da7253426.htm (9302 words)

	Electromagnetic Pulse (EMP)
		An electromagnetic pulse is a transient electromagnetic signal produced by a nuclear explosion in or above the Earth's atmosphere.
		Though not considered (directly) dangerous to people, the electromagnetic pulse (EMP) is a potential threat to many electronic signals.
		This INR is in the form of rapidly-moving neutrons and high-energy electromagnetic radiation, called x-rays and prompt gamma rays.
	www.measurement-testing.com /electromagnetic-pulse.html (692 words)

	Nuclear Weapon EMP Effects
		Furthermore, a HEMP attack must use a relatively large warhead to be effective (perhaps on the order of one mega-ton), and new proliferators are unlikely to be able to construct such a device, much less make it small enough to be lofted to high altitude by a ballistic missile or space launcher.
		An effective net vertical electron current is formed by the asymmetric deposition of electrons in the atmosphere and the ground, and the formation and decay of this current emits a pulse of electromagnetic radiation in directions perpendicular to the current.
		In this regime the electric and magnetic fields of the radiation are no longer perpendicular to one another, and many of the analytic tools with which we understand EM coupling in the simple plane-wave case no longer apply.
	www.fas.org /nuke/intro/nuke/emp.htm (1466 words)

	ELECTROMAGNETIC PULSE AND
		The most common perception of a nuclear detonation is that represented by a mushroom cloud -- a burst at or near the surface of the earth.
		The Compton electrons, in turn, interact with the earth's magnetic field, producing an intense electromagnetic pulse that propagates downward to the earth's surface.
		The resulting interior electron currents generate cavity electromagnetic fields that induce voltages on the associated electronics which produce spurious currents that can cause upset or burnout of these systems.
	www.fas.org /spp/starwars/congress/1997_h/h970716u.htm (2154 words)

	On evolution of the pair-electromagnetic pulse of a charged black hole (Site not responding. Last check: 2007-11-07)
		Using hydrodynamic computer codes, we study the possible patterns of relativistic expansion of an enormous pair-electromagnetic-pulse (P.E.M. pulse); a hot, high density plasma composed of photons, electron-positron pairs and baryons deposited near a charged fl hole (EMBH).
		On the bases of baryon-loading and energy conservation, we study the bulk Lorentz factor of expansion of the P.E.M. pulse by both numerical and analytical methods.
		We can see that the one-dimensional code (only a few significant points are pesented) matches the expansion pattern of a shell of constant coordinate thickness (slab 1).
	aanda.u-strasbg.fr:2002 /articles/aas/full/1999/15/r81/r81.html (700 words)

	Electromagnetic Pulse Attack - EMP
		Senator Kyl warns of an EMP (electromagnetic pulse) attack which could devastate the entire United States.
		An electromagnetic pulse (EMP) attack on the American homeland, said one of the distinguished scientists who testified at the hearing, is one of only a few ways that the United States could be defeated by its enemies -- terrorist or otherwise.
		Depending on the location and size of the blast, the effect would be to knock out already stressed power grids and other electrical systems across much or even all of the continental United States, for months if not years.
	www.wanttoknow.info /050509electromagneticattack (1461 words)

	Electromagnetic pulse
		In telecommunication, the term electromagnetic pulse (EMP) has the following meanings:
		The electromagnetic radiation from a nuclear explosion caused by Compton-recoil electrons and photoelectrons from photons scattered in the materials of the nuclear device or in a surrounding medium.
		Note: In the case of a nuclear detonation, the electromagnetic pulse consists of a continuous frequency spectrum.
	www.ebroadcast.com.au /lookup/encyclopedia/em/EMP.html (119 words)

	WorldTribune.com: Nuke over U.S. could unleash electromagnetic tsunami
		The result is an enormous pulsed current of high energy electrons that will interact, in turn, with the earth's magnetic field.
		As the EMP Threat Commission put it: The electromagnetic fields produced by weapons designed and deployed with the intent to produce EMP have a high likelihood of damaging electrical power systems, electronics, and information systems upon which American society depends.
		And finally, there is a third wave of EMP attack, the "slow component" produced by the continuing expansion of the fireball in the earth's magnetic field.
	www.worldtribune.com /worldtribune/WTARC/2005/ss_emp_12_06.html (2171 words)

	The American Thinker
		Public attention was focused on the topic by the release in 2005 of a government-sponsored study by the congressional Commission to Assess the Threat to the United States from Electromagnetic Pulse Attack.
		his pulse can be powerful enough to cover an entire continent, and is extremely dangerous for all types of electronic equipment.
		The pulse could very well be attenuated by distance and other factors, some of which may be completely unknown to us at this time.
	www.americanthinker.com /articles.php?article_id=5432 (1685 words)

	Defense Tech: "E-BOMB," FOR REAL?
		On the eve of the Iraq invasion, it was being hailed as America's next "wonder weapon." The "e-bomb" -- a munition using high-powered microwaves to fry circuits and computers -- was about to be dropped on Baghdad, we were told.
		And the press could hardly keep from quivering at the thought of the big, electromagnetic strike, which would sizzle everything from anti-aircraft radars to Iraqi phone systems.
		Some say a prototype e-bomb was used to knock out Saddam's broadcast facilities.
	www.defensetech.org /archives/001141.html (256 words)

	Chinese Electromagnetic Pulse Bombs Could Destroy US Fleet
		February 12: Chinese military strategists have called for expedited development of electromagnetic pulse bombs or missiles as a means to destroy American aircraft carrier fleets, the Shanghai Jiefang Ribao reports.
		A saturation attack by [short or medium-range] electromagnetic pulse bombs [missiles] do not have to hit the carrier or support ships, the article states.
		They only need to explode "within dozens of miles around the carrier to destroy all important ship-board integrated circuits and IC chips of the electronic equipment, thus paralyzing the radar and telecommunication system of the aircraft carrier and vessels around it, as well as ship mounted missiles and aircraft.
	www.rense.com /politics6/pulse.htm (446 words)

	The Chupacabras of Infowar (Site not responding. Last check: 2007-11-07)
		To guarantee the effects attributed to the weapon requires the release of sufficient power, be it in the form of gamma rays or microwaves, that anyone triggering the weapon and everyone in the vicinity of the target would be killed or seriously injured.
		Since then, the idea of using electromagnetic pulses as an electric ray -- but without a messy 1.4 megaton nuclear explosion -- has become increasingly interesting to the military, fans of the weird science of nonlethality, computer security experts and teenage hackers.
		During the segment, Sawyer claimed "results" of testing of electromagnetic pulse on a Cobra helicopter at Junction Ranch in China Lake were "classified." Curiously, Crypt Newsletter covered the results of this test which were published on the Web over a year ago by the government.
	www.soci.niu.edu /~crypt/other/chupax.htm (2843 words)

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