It is possible to obtain a qualitative understanding of many diffraction phenomena by considering how the relative phases of the individual secondary wave sources vary, and in particular, the conditions in which the phase difference equals half a cycle in which case waves will cancel one another out.

In particular, Hofstadter claims that our sense of having ( or being ) an " I " comes from the abstract pattern he terms a " strange loop ", which is an abstract cousin of such concrete phenomena as audio and video feedback, and which Hofstadter has defined as " a level-crossing feedback loop ".

In scientific research, the behavior of the two fluid phases of helium-4 ( helium I and helium II ), is important to researchers studying quantum mechanics ( in particular the property of superfluidity ) and to those looking at the phenomena, such as superconductivity, that temperatures near absolute zero produce in matter.

Hypnotic phenomena thus involve not only increased or decreased activity of particular subsystems, but also their interaction.

In 1991, when liquid crystal displays were already well established, Pierre-Gilles de Gennes received the Nobel Prize in physics " for discovering that methods developed for studying order phenomena in simple systems can be generalized to more complex forms of matter, in particular to liquid crystals and polymers ".

A model organism is a non-human species that is extensively studied to understand particular biological phenomena, with the expectation that discoveries made in the organism model will provide insight into the workings of other organisms.

In principle all kinds of magnetism originate ( similar to Superconductivity ) from specific quantum-mechanical phenomena ( e. g. Mathematical formulation of quantum mechanics, in particular the chapters on spin and on the Pauli principle ).

According to the particular tradition, with the experience of nirvana the mind ( Buddhism ) or soul ( Jainism ) or spirit ( Hinduism ) has ended its identity with material phenomena and experiences a sense of great peace.

In particular, critics allege that no observed phenomena suggest the existence of extraterrestrial intelligence, and furthermore that the assertion of the existence of extraterrestrial intelligence has no good Popperian criteria for falsifiability.

Social geography is the branch of human geography that is most closely related to social theory in general and sociology in particular, dealing with the relation of social phenomena and its spatial components.

His precise measurements indicated that " new stars " ( stella novae, now known as supernovae ), in particular that of 1572, lacked the parallax expected in sub-lunar phenomena, and were therefore not " atmospheric " tail-less comets as previously believed, but occurred above the atmosphere and moon.

In particular, many Taoist practices drew from the Warring-States-era phenomena of the wu ( connected to the " shamanism " of Southern China ) and the fangshi ( which probably derived from the " archivist-soothsayers of antiquity, one of whom supposedly was Laozi himself "), even though later Taoists insisted that this was not the case.

Biddulph ( 2010 ) has explained this by applying techniques from deterministic chaos to non-chaotic systems, in particular a computable version of Palmer's Universal Invariant Set proposition ( 2009 ), which allows the apparent weirdness of quantum phenomena to be explained as artefacts of the quantum apparatus not a fundamental property of nature.

A physical law or scientific law is, according to the Oxford English dictionary, " a theoretical principle deduced from particular facts, applicable to a defined group or class of phenomena, and expressible by the statement that a particular phenomenon always occurs if certain conditions be present.

* Cultural bias: interpreting and judging phenomena in terms particular to one's own culture.

Newton firmly rejected such criticisms and wrote that it was enough that the phenomena implied gravitational attraction, as they did ; but the phenomena did not so far indicate the cause of this gravity, and it was both unnecessary and improper to frame hypotheses of things not implied by the phenomena: such hypotheses " have no place in experimental philosophy ", in contrast to the proper way in which " particular propositions are inferr'd from the phenomena and afterwards rendered general by induction ".

A particular and repeated target of his criticism is the manner in which the " nature abhors a vacuum " principle had migrated from simply a matter of experiment to a high principle of physics which could be invoked to explain phenomena such as suction but which itself was above question.

Orogenic events ( a ) cause distinctive structural phenomena related to tectonic activity, ( b ) affect rocks and crust in particular regions, and ( c ) happen within a specific period of time.

However, this rejection of operationalism as a general project destined ultimately to define all experiential phenomena uniquely did not mean that operational definitions ceased to have any practical use or that they could not be applied in particular cases.

He not only represents the configurations of particular groups incorrectly, but describes some phenomena which are inconsistent with any one supposed latitude of the spectator, and others which could not coexist at any one epoch.

The wisdom of granting such tax exemptions is another matter, but this particular instance is, in my opinion, completely satisfactory.

Second, we can make assistance for particular projects conditional on the consistency of such projects with the program.

The extent of such interference -- which may be so slight as to be undetectable at any point where either of the stations renders a usable signal, or may be so great as to virtually destroy the service areas of both stations -- depends on many factors, among the principal ones being the distance between the stations, their respective radiated power, and, of particular significance here, the time of day.

Even though the registers may have an incomplete record of persons present in a particular area or include persons no longer living there, they contain precise information on ages, by date of birth, for some of the persons present ( especially children in relatively stable communities ) and supplementary information ( such as records of marital status ) for many others.

Eventually such incidents became more sporadic, and more sharply demarcated from her day-after-day behavior, and in one particular session, after several minutes of such behavior -- which, as usual, went on without any accompanying words from her -- she asked, eagerly, `` Did you see Granny ''??

While there may be several such industries to which the model of this paper is applicable, the authors make particular claim of relevance to the explanation of the course of wages and prices in the steel industry of the United States since World War 2.

By seeing such varied places, both interesting and beautiful, you will become aware of the many different civilizations Rome has lived through, and in particular, get a feel of Renaissance Rome.

Although the particular form of conceptualization which popular imagination had made in response to the experience of spirit was undoubtedly defective, the raw experience itself which led to such excesses remains with us as vividly as ever.

But what would give a particular boom, it was the arrival on the music scene such as Hadj Brahim talented performers, said Khaled, Cheb Mami, Cheb Hasni, Faudel, Rachid Taha, Raina Rai, Reda Taliani, Cheb Anouar, Cheb Bilal, Cheb Abdou or even Cheba Djenet and Cheba Zahouania a.

Human time on Earth is divided up into relevant cultural traditions based on material, such as the Paleolithic and the Neolithic, of particular use in archaeology.

In the late 1980s and 1990s authors such as George Marcus and James Clifford pondered ethnographic authority, in particular how and why anthropological knowledge was possible and authoritative.

The appellate court will typically be deferential to the lower court's findings of fact ( such as whether a defendant committed a particular act ), unless clearly erroneous, and so will focus on the court's application of the law to those facts ( such as whether the act found by the court to have occurred fits a legal definition at issue ).

Some alphabets today, such as the Hanuno ' o script, are learned one letter at a time, in no particular order, and are not used for collation where a definite order is required.

More local particular weather examples could be found in examples such as the ; Azores High, Benguela Current, Nor ' easter.

Societies are also a meeting point for people with particular interests, such as amateur telescope making.

In many cases such a selection can be made without invoking the axiom of choice ; this is in particular the case if the number of bins is finite, or if a selection rule is available: a distinguishing property that happens to hold for exactly one object in each bin.

It is possible to prove many theorems using neither the axiom of choice nor its negation ; such statements will be true in any model of Zermelo – Fraenkel set theory ( ZF ), regardless of the truth or falsity of the axiom of choice in that particular model.

It should not be assumed that an archaeological division or culture unit corresponds to a particular language group or to a socio-political entity such as a tribe.

The early 1960s and 1970s ( up until his death in 1976 ) were marked by key works in Helsinki, in particular the huge town plan for the void in centre of Helsinki adjacent to Töölö Bay and the vast railway yards, and marked on the edges by significant buildings such as the National Museum and the main railway station, both by Eliel Saarinen.

As a result, Acts is particularly influential among branches of Christianity which place particular emphasis in the Holy Spirit, such as Pentecostalism and the Charismatic movement.

The back and sides of a particular guitar are typically made of the same wood ; Brazilian or East Indian rosewood and Honduras mahogany are traditional choices, however, maple has been prized for the figuring that can be seen when it is cut in a certain way ( such as " flame " and " quilt " patterns ).

These drugs ( such as rofecoxib, celecoxib and etoricoxib ) are equally effective analgesics when compared with NSAIDs, but cause less gastrointestinal hemorrhage in particular.

Specific cortical cells produce particular hormones including aldosterone, cortisol, and androgens such as androstenedione.