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Topic: Principle of explosion


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In the News (Tue 10 Nov 09)

  
 Reference.com/Encyclopedia/Principle of explosion
The principle of explosion (also known as ex falso quodlibet, ex falso sequitur quodlibet (EFSQ for short), ex contradictione (sequitur) quodlibet (ECQ for short), and ex falso/contradictione (sequitur) aliquot) is the law of classical logic and a few other systems, for example, intuitionistic logic, according to which "anything follows from a contradiction".
There are two basic kinds of argument for the principle of explosion.
Proponents of paraconsistent logic reject the principle of explosion, and thus must find flaw with both of the arguments above.
www.reference.com /browse/wiki/Principle_of_explosion   (315 words)

  
  College of Metamagical Principles
The path principles of this college are used to effect a spell that is cast immediately thereafter.
Of course a separate principle path will need to be prepared for each such spell casting, so this ability is usually only useful for cases where such repeated castings are known ahead of time to be necessary, or if the target is either willing or is unable to escape.
This principle allows the metamagician to sense when he is the subject of a magical clairvoyance power, such as clairsentience to sight, although it will not allow him to determine who is performing the observation.
hiddenway.tripod.com /hero/metamagic.html   (7267 words)

  
 principle of explosion - Information from Reference.com
There are no dictionary entries for principle of explosion, but principle, of, explosion are spelled correctly.
Principles underlying the uniform breakdown of rocks by an explosion
The basic principle of explosion protection is the same worldwide.
dictionary.reference.com /search?q=principle%20of%20explosion   (232 words)

  
 Paraconsistent logic Information
The principle of explosion precludes this, and so must be abandoned.
Though each of these principles have been challenged, the most popular approach is to reject disjunctive syllogism.
It is easy to check that this valuation constitutes a counterexample to both explosion and disjunctive syllogism.
www.bookrags.com /wiki/Paraconsistent_logic   (1711 words)

  
 Doctrine of Double Effect (Stanford Encyclopedia of Philosophy)
The doctrine (or principle) of double effect is often invoked to explain the permissibility of an action that causes a serious harm, such as the death of a human being, as a side effect of promoting some good end.
The principle of double effect is directed at well-intentioned agents who ask whether they may cause a serious harm in order to bring about a good end of overriding moral importance when it is impossible to bring about the good end without the harm.
A third common misinterpretation of double effect is to assume that the principle assures agents that they may do this provided that their ultimate aim is a good one that is ordinarily worth pursuing, the proportionality condition is satisfied and the harm is minimized.
plato.stanford.edu /entries/double-effect   (3478 words)

  
 HENRI LOUIS LE CHATELIER
The nature of the principle itself is as easy to grasp as it is difficult to state succinctly, and the man himself is almost totally eclipsed by the popularity of his most famous observation.
This rather cumbersome expression of the Principle, in a note first published in 1884, seems to show that Le Chatelier himself was the first to experience the frustration of trying to express a generalized form of the concept in a clear and succinct manner.
The result of these investigations are seen in his well-known principles of equilibria and the displacement of equilibria to which his name is attached and for which he is certainly best known among students of chemistry.
www.woodrow.org /teachers/ci/1992/LeChatelier.html   (2461 words)

  
 Test Anxiety: Should America Ratify the CTBT? Video Transcript
And, when a nuclear explosion or a nuclear weapon is detonated underground, it creates seismic signals that travel through the earth much like an earthquake, and so we can record the motions created by an underground nuclear explosion using the same technologies that we use to study earthquakes.
In addition, for very small explosions, it's possible to disguise the signal or conduct the explosion in such a way that it would be difficult for the monitoring system to detect the explosion.
In principle, a nuclear explosion could be detonated in a large underground cavity, and the size of the signal produced from such an explosion, if it was muffled in a large underground cavity, the size of that explosion could be reduced by several fold, even perhaps up to a factor of seventy decrease in size.
www.cdi.org /adm/1235/Vink.html   (6201 words)

  
 May 13: anthropic principle   (Site not responding. Last check: )
Weak Anthropic Principle: The observed values of all physical and cosmological quantities are not equally probable but they take on values restricted by the requirement that there exist sites where carbon-based life can evolve and by the requirements that the Universe be old enough for it to have already done so.
With respect to the anthropic principle, we simply exist in one of the many universes where intelligent life is possible and did evolve.
The strong form of the anthropic principle would then imply that Universe must be such as it is to admit the creation of observers within it at some stage.
blueox.uoregon.edu /~karen/astro123/lectures/lec18.html   (1201 words)

  
 Physics Has Its Principles
The essential difference is that physicists adhere to certain logical principles, any violation of which would amount to a miracle; whereas the equations of mathematics generally are oblivious to physical constraints.
But the principle is really a logical necessity if energy, force, density, and all physical quantities are viewed as consisting of a finite number of discrete physical components, even if at an undetectable level.
But nothing prohibits this happening in principle if new methods of propulsion such as gravity, not limited by the speed of electromagnetic radiation, were employed for the purpose.
www.metaresearch.org /cosmology/PhysicsHasItsPrinciples.asp   (4758 words)

  
 Nuclear Files: Educators: Study Guides:
The destructive effect of nuclear weapons is the result of the enormous energies released by the fission of uranium or plutonium atomic nuclei (in an atomic bomb) which (in a thermonuclear bomb) cause the fusion of deuterium, tritium, and lithium nuclei with a still more massive energy release.
The ultra – energetic nuclear particles released by the explosion radiate the surrounding material, and the intense heat causes this debris to rise upward in a giant cloud.
In the 1980’s, atmospheric scientists showed that the explosion of several hundred thermonuclear bombs at once would eject enough dust and soot into the atmosphere to temporarily obscure the sun and produce a rapid cooling of the atmosphere, an effect after huge volcanic eruptions in historical times.
www.nuclearfiles.org /menu/educators/study-guides/nuclear-weapons_effects-nuclear-weapons.htm   (1212 words)

  
 R. Stahl - Innovative Explosion Protection - Ex Protection   (Site not responding. Last check: )
Areas where the occurrence of explosive mixtures of flammable materials and air cannot be prevented by applying primary explosion protection require special measures for the prevention of ignition sources to be taken.
he second method of explosion protection is based upon the isolation of the ignition source -or energy ingredient, from the fuel-air mixture.
his form of explosion protection permits the energy source to exist within the fuel-air mixture but, by design limits the amount of electrical and thermal energy which could be released to levels that are incapable of causing ignition.
www.rstahl.com /Exprotection   (1085 words)

  
 Principle of explosion - Definition, explanation
Ex falso quodlibet, also known as ex contradictione (sequitur) quodlibet or the principle of explosion is the rule of classical logic that states that anything follows from a contradiction.
"Explosion" refers to the fact that the acceptance of a single contradiction into one's system makes the number of overall theorems "explode".
Explosion is based on several of the fundamental formal properties of disjunction, the logical operator corresponding to the English "or".
www.calsky.com /lexikon/en/txt/p/pr/principle_of_explosion.php   (227 words)

  
 The Precautionary Principle
The Precautionary Principle, which can best be paraphrased by the medical proscription, “first do no harm,” or the colloquialism, “an ounce of prevention is worth a pound of cure,” is now being used in a broad and expanding number of venues.
The “Precautionary Principle” is the long–term objective of the District.
The principle recognizes that: a) no pesticide product is free from risk or threat to human health, and b) industrial producers should be required to prove that their pesticide products demonstrate an absence of risks…rather than requiring that the government or the public prove that human health is being harmed….
www.greenschools.net /report/precautionary.html   (2752 words)

  
 Astrobiology: The Living Universe - The Anthropic Principle
The idea behind the anthropic principle is that the basic constants that govern the universe were set so that life would be possible.
The first thing you have to do is to decide on the strength of the explosion of the Big Bang that begins the universe.
Many claim that the anthropic principle is not a true scientific theory since it is not testable (unlike the theories of the speed of light and relativity).
library.thinkquest.org /C003763/index.php?page=concepts03   (1382 words)

  
 Where is the centre of the universe?
So, the Big Bang was very different from any explosion we are accustomed to and it does not need to have a central point.
If the big bang were an ordinary explosion in an already existing space we would be able to look out and see the expanding edge of the explosion with empty space beyond.
Despite the discovery of a great deal of structure in the distribution of the galaxies most cosmologists still hold to the cosmological principle either for philosophical reasons or because it is a useful working hypothesis which no observation has contradicted.
math.ucr.edu /home/baez/physics/Relativity/GR/centre.html   (1417 words)

  
 The Antigonish Review 145: Cory Lavender
Yet the explosions that annihilate books can be countered by an explosion principle inherent in the nature of books themselves.
"Explosion," a book: this means that the book is not the laborious assemblage of a totality finally obtained, but has for its being the noisy, silent bursting which without the book would not take place.
She is attracted to the numerous explosions, candle-small, taking place on the shelves of this ruinous library.
www.antigonishreview.com /bi-145/145-essays-cory-lavender.html   (2735 words)

  
 anthropic principle
The anthropic principle does demonstrate that all of our cosmological models are constructed by augmenting the results of observations by a philosophical principle.
For example, the Copernican principle (now known as the cosmological principle) states that the portion of the Universe we observe is not special or privileged, but is representative of the whole.
Almost all scientists and philosophers accept the general principle that the prediction of unobservable entities is an acceptable scientific hypothesis if those entities stem from a theory that has other testable consequences.
abyss.uoregon.edu /~js/ast123/lectures/lec19.html   (2692 words)

  
 Intrinsically Safe Rated
Explosion confinement: Containing explosions within an enclosure able to prevent electrical or thermal energy from the explosion from reaching the volatile atmosphere outside the enclosure.
In an explosionproof system or component, an explosion can indeed occur, but a specially designed enclosure would keep the resulting flames, sparks, or hot gases from reaching the volatile atmosphere outside the enclosure.
Whether you're using explosion confinement (explosionproofing), ignition source isolation (purging), or energy release limitation (intrinsic safety) as a safety approach, the principal for connecting sensors is the same: You must make keep the sensor from generating energy in quantities sufficient to cause ignition.
www.sensotec.com /intrinsically_safe_rated.asp   (2830 words)

  
 March-April 2003: Ask CSA—Zone Verses Divisions
It should be noted that the principle behind the division of Class I locations is as significant as the actual practical application.
During testing, it must continue to provide explosion protection after two countable faults have been applied (countable faults are faults to components of the equipment being tested, not field wiring components).
The principle of both is to contain an explosion within the enclosure.
www.iaei.org /subscriber/magazine/03_b/magazine_03b_ask_csa.htm   (3229 words)

  
 The Explosion that Shattered Solar Theory
Just thirty minutes after the explosion, Earth (some 96 million miles from the Sun) was immersed in what NASA scientists called “the most intense proton storm in decades.” Proton storms get their name from the “rain” of positively charged particles when a mass ejection reaches the Earth.
But by banishing electric fields from their theoretical models, astronomers and astrophysicists are left with no mechanism to account for the things they now see.
He noted that when the explosion occurred, sunspot 720 was located at a special place on the Sun: 60 degrees west longitude.
thunderbolts.info /tpod/2006/arch06/060830solartheory.htm   (1128 words)

  
 Logic - Wikipedia, the free encyclopedia
The analytical generality of the predicate logic allowed the formalisation of mathematics, and drove the investigation of set theory, allowed the development of Alfred Tarski's approach to model theory; it is no exaggeration to say that it is the foundation of modern mathematical logic.
However modal logic is normally formalised with the principle of the excluded middle, and its relational semantics is bivalent, so this inclusion is disputable.
Again, relevance logic and dialetheism are the most important approaches here, though the concerns are different: the key issue that classical logic and some of its rivals, such as intuitionistic logic have is that they respect the principle of explosion, which means that the logic collapses if it is capable of deriving a contradiction.
ashvattha.nl-one.nl /go2/Logic.html   (3826 words)

  
 New Processing Strategies For Hemp
Steam explosion principles are described and an initial demonstration has revealed its utility for transforming raw hemp fibre into a material whose texture and properties are comparable with or superior to cotton and "cottonized" hemp.
Due to particular fibre surface structures after steam explosion, an outstanding sliver adhesion is guaranteed for the necessary stability of pre-spuns required in industrial spinning.
After steam explosion, according to the assigned raw material, the hemp fibres show a high degree of purity, which can be completed as required by a wash or bleaching process using hydrogen peroxide.
mojo.calyx.net /~olsen/HEMP/IHA/iha02101.html   (3823 words)

  
 AskTog: First Principles of Interaction Design
The following principles are fundamental to the design and implementation of effective interfaces, whether for traditional GUI environments or the web.
Of late, many web applications have reflected a lack of understanding of many of these principles of interaction design, to their great detriment.
The following principles, taken together, offer the interaction designer tremendous latitude in the evolution of a product without seriously disrupting those areas of consistency most important to the user.
www.asktog.com /basics/firstPrinciples.html   (3800 words)

  
 Regulatory Review of OSHA'S Grain Handling Facilities Standard [29 CFR 1910.272]   (Site not responding. Last check: )
National attention focused on the destructiveness of explosions in grain handling facilities when a series of explosions occurred in late 1977 and early 1978; in December 1977, alone, 59 deaths and 49 injuries resulted from five grain elevator explosions (52 FR 49592).
Since explosions and suffocations occur when grain is being moved (e.g., movement stirs up grain dust, workers may enter grain bins to loosen grain that is not flowing), there may be more potential now than in earlier years for explosions and suffocations to occur.
It is necessary to carry out the statutory objectives of protecting workers from grain fires, explosions, engulfments, and other hazards, such as entry and the release of hazardous energy from equipment, and major changes are not needed to minimize significant impact on a substantial number of small entities.
www.osha.gov /dcsp/compliance_assistance/lookback/grainhandlingfinalreport.html   (15738 words)

  
 Technical Notes EEx Explosion Protection
An explosion is defined as a sudden reaction involving rapid physical or chemical decay accompanied by an increase in temperature or pressure or both.
Type of protection in which components that could ignite a potentially explosive atmosphere are fitted in an enclosure that will contain the pressure of an explosion, preventing ignition of inflammable gas outside the enclosure.
Technically unavoidable gaps in the enclosure are so small and their length's are restricted so that any hot gas released through them will have lost its power to effect ignition.
www.awc-corp.com /TechNotes/TN_EEx.htm   (956 words)

  
 DLC: A Test of Principle
If it was temporary then, it's temporary now, especially since we've had an explosion of public debt, a terrorist attack on the United States, and the deployment of hundreds of thousands of American troops overseas in the intervening period.
The second is that the inheritance tax imposes an onerous burden on owners of family farms and family-owned small businesses, forcing them to sell these assets instead of passing them on to future generations.
For Republicans, it offers a test of their seriousness about public debt, and about making the war on terrorism, not tax relief for the very wealthy, their top priority.
www.ndol.org /ndol_ci.cfm?kaid=131&subid=192&contentid=253278   (837 words)

  
 The Litigation Explosion
This has come to be known as the "litigation explosion." Whatever the causes—a breakdown of traditional values, the loss of a sense of community, too many hungry lawyers, wasteful insurance companies—the impact on each of us is significant.
If someone causes injury, that person should be required to fairly compensate the victim for his loss.
The problem is that this general principle bears no relationship to what is actually occurring in the legal system today.
www.rjmintz.com /appch1.html   (551 words)

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