Observable - Observable In physics, an observable roughly means a quantity which can be measured. In classical physics the term did not have to be used, as it was believed that the quantities were "real", that is, the measurements were returning a physical value of the system. In the quantum physics work this is not the case, observables are considered not to really exist on their own, and are the results of a measurement, and nothing more. As an example, consider the measurement of the position of an object. In the classic picture the position is real, and measuring it will return the same value every time. In the quantum picture the position is not a real value, and the number returned will vary with every measurement. In.
Kamptobaatar - of Multituberculata. For those of a technical disposition, it's within the suborder of Cimolodonta, and a member of the family Sloanbaataridae. Genus: Kamptobaatar Kielan-Jaworowska Z, 1970 'bent hero' Remarks: 'Bent' refers to the observable bend of the zygomatic arches in the skull. Species: Kamptobaatar kuczynskii Kielan-Jaworowska Z, 1970 Place: Djadokhta Formation Country: Mongolia Age: Upper Cretaceous Remarks: The skull had a length of about 2cm, whilst the whole critter was a mighty 10cm. Reference: Kielan-Jaworowska (1970), New Upper Cretaceous multituberculate genera from Bayn Dzak, Gobi Desert. Palaentologica Polonica, 21, p.35-49. Page references: Kielan-Jaworowska Z & Hurum JH (2001), Phylogeny and Systematics of multituberculate mammals. Paleontology 44, p.389-429. (This information has been derived from [1] MESOZOIC MAMMALS; Djadochtatherioidea, an internet directory. As that's my webpage, there are no issues of copyright. Trevor.
Jacques Nicolas Augustin Thierry - civilizations and the two races from which the modern world has sprung. His romantic ardour was later still further nourished by the works of Sir Walter Scott, and though he did not himself actually write romances, his conception of history fully recognized the dramatic element. His main ideas on the Germanic invasions, the Norman Conquest, the formation of the Communes, the gradual ascent of the nations towards free government and parliamentary institutions are already observable in the articles contributed by him to the Censeur européen (1817-20), and later in his Lettres sur I'histoire de France (1820). From Fauriel he learnt to use the original authorities; and by the aid of the Latin chronicles and the collection, as yet very ill understood, of the Anglo-Saxon laws, he composed his Histoire de la.
Jack O'Lantern (mushroom) - its toxicity is the fact that it smells and looks very appealing, to the extent that there are reports of repeat poisonings from individuals who were tempted to try them a second time. Its bioluminescence is generally only observable in low-light conditions with acclimated eyes. The whole mushroom doesn't glow—only the gills. This is due to luciferase, the same chemical that fireflies use to glow. However, in this case, the luciferase is a waste product, and is transported to the gills to get it out of the mushroom. Unlike the chanterelle, the jack-o-lantern has true, sharp, non-forking gills; this is the only "simple" trait for distinguishing between the two..
Jav, Prav and Nav - day, though now not clearly defined. Prav Prav is the law of Svarog that governs both Yav and Nav. In modern world pandane to this concept are laws of physics, but there is one big difference. The law that says that a stone falls when dropped is not only a mere observable fact: it is rightfull, good and just that stones are falling to the ground when dropped. Somewhat similar belief today is anthropic principle, but it only states that laws of physics are useful..
Jewish music - transcribed in the article Ne'ilah with the piyyut "Darkeka" closely reproduces the music of a parallel species of medieval Latin verse, the metrical sequence "Missus Gabriel de Cœlis" by Adam of St. Victor (c. 1150) as given in the "Graduale Romanum" of Sarum. The mournful chant characteristic of penitential days in all the Jewish rites, is closely recalled by the Church antiphon in the second mode "Da Pacem Domine in Diebus Nostris" ("Vesperale Ratisbon," p. 42). The joyous intonation of the Northern European rite for morning and afternoon prayers on the Three Festivals (Passover, Sukkot and Shavuot) closes with the third tone, third ending of the Gregorian psalmody; and the traditional chant for the Hallel itself, when not the one reminiscent of the "Tonus Peregrinus," closely corresponds with those for Ps..
Johann Franz Encke - orbital elements of this planet. At this time, all the known comets only had an orbital period of 70 years and more, were the aphelion is far beyond the Uranus orbit. The most famous comet of this family was the Halley comet with its orbitting time of 76 years. Therefore the orbit of the comet discovered by Pons was a sensation, because his orbit was found to have a period 3.3 years, therefore the aphelion had to be within the Jupiter orbit. Encke predicted its return for 1822, but this return was only observable from the southern hemisphere and was seen by K. Ruemker from Australia. The comet was also identified with the one seen by Pierre Méchain in 1786 and by Caroline Herschel in 1795. Encke sent his calculations as.
Information warfare - 'Information Age.' information-related technologies concentrate data, vastly increase the rate at which we process and transmit data, and intimately couple the results into virtually every aspect of our lives. The Information Age is also transforming all military operations by providing commanders with information unprecedented in quantity and quality (2). The commander with the advantage in observing the battlespace, analyzing events, and distributing information possesses a powerful, if not decisive, lever over the adversary. We must distinguish between information age warfare and information warfare. We make this distinction because much of the literature treats information warfare and advances in information technology synonymously. Information age warfare uses information technology as a tool to impart our combat operations with unprecedented economies of time and force (3). Ultimately, information age warfare will affect all combat.
Irritation - Irritation Irritation is an observable physiological reaction to a stimulus that the organism instinctually avoids. Assigning it the status of pain or pleasure is the perception of the being stimulated - which is not observable although it may be shared (see gate control theory of pain). We can't say that an oyster feels pain, but we can say it does react to something irritating it, to produce something that is useful to us, and not useful to it. Pearls do not attract mates for the oyster, they attract them for us. It seems impossible to find an evolutionary advantage for the ability to produce the pearl, thus it can be explained only as a reaction to an irritation. We can also say that an amoeba avoids a pin.
Hamiltonian (quantum mechanics) - momentum variables (i.e. symplectic variables), which is the basis for a re-formulation of classical mechanics known as Hamiltonian mechanics. In quantum mechanics, the Hamiltonian refers to the observable corresponding to the total energy of a system. The classical Hamiltonian is described in the article on Hamiltonian mechanics. This article discusses the Hamiltonian operator in quantum mechanics. Table of contents showTocToggle("show","hide") 1 The quantum Hamiltonian 2 Energy Eigenket Degeneracy, Symmetry, and Conservation Laws 3 Hamilton's equations The quantum Hamiltonian As explained in the article mathematical formulation of quantum mechanics, the physical state of a system may be characterized as a vector in an abstract Hilbert space, and physically observable quantities as Hermitian operators acting on these vectors. The quantum Hamiltonian H is the observable corresponding to the total energy of the system..
Heisenberg picture - picture, the state vector, ψ> does not change with time and an observable A, satisfies . In some sense, the Heisenberg picture is more natural and fundamental that the Schrödinger picture, especially for relativistic theories. See also Schrödinger picture. This article is a stub. You can help Wikipedia by fixing it..
Hidden Markov model - modelled is assumed to be a Markov process with unknown parameters, and the challenge is to determine the hidden parameters, from the observable parameters, based on this assumption. The extracted model parameters can then be used to perform further analysis, for example for pattern recognition applications. The notions of observable and hidden are similar to Plato's notions of shadows and forms in the allegory of the cave. The allegory claims that perceived reality is but the shadow thrown into the world of experience of a true reality which is inaccessible to direct sensory experience. `Forms' in the true reality contain the essence of a class of object which can be experienced only incompletely in perceived reality. This analogy is particularly strong when modelling parts of speech and sentences, and other entities.
How to distinguish a monocot from a dicot - easy to distinguish most dicots and monocots from one another, the basis for the split in classification is a characteristic of the developing embryo, a feature that is no longer observable on the adult plant unless one can access the internal structure of a seed. Therefore, the following characteristics can be applied in the absence of knowledge about the cotyledon. However, be mindful that no 'single' characteristic will absolutely distinguish a dicot from a monocot, other than by definition monocots have one cotyledon and dicots have two. In general, monocots are simpler in structure than dicots, although monocots evolved from dicots. Table of contents showTocToggle("show","hide") 1 Stem 2 Root 3 Leaf 4 Flower Stem In monocot stems, the vascular tissues — the phloem and xylem — are in bundles scattered throughout.
Huygens' principle - is produced in a remote corner of one of them, a person in the other room will hear the sound as if it originated at the doorway. As far as the second room is concerned, the vibrating air in the doorway is the source of the sound. The same is true of light passing the edge of an obstacle, but this is not as easily observed because of the short wavelength of visible light. The interference of light from variously distant areas of the moving wave front accounts for the maxima and minima observable as diffraction fringes. See, for example, the double-slit experiment. See also: Knife-edge effect.
Hydrological phenomenon - A hydrological phenomenon or hydrologic phenomenon are those observable events which are explained by or illuminate the applied science of hydrology. Hydrological phenomena lakes oceans rivers springs wells artesian or flowing wells.
Hypothetico-deductive method - hypothesis is devised from which can be deduced certain explicit, observable predictions. Observations which run contrary to those predicted are taken as evidence against the hypothesis, observations which are in agreement with those predicted are taken as corroborating the hypothesis. It is then supposedly possible to compare the explanatory value of competing hypotheses by looking to see how well they are sustained by their predictions. The hypothetico-deductive method derives primarily from the work of Karl Popper. What is to count as corroborating evidence is philosophically problematic. The raven paradox is a famous example. The observation 'all swans are white' would appear to be collaborated only by observations of white swans. However, 'all swans are white' is logically equivalent to 'all non-white things are not swans'. 'This is a green tree' is.
Gauss-Markov theorem - uncorrelated --- a weaker condition), nor are they assumed to be identically distributed (but only homoscedastic --- a weaker condition, defined below). More explicitly, and more concretely, suppose we have for i = 1, . . . , n, where β0 and β1 are non-random but unobservable parameters, xi are non-random and observable, εi are random, and so Yi are random. (We set x in lower-case because it is not random, and Y in capital because it is random.) The random variables εi are called the "errors". The Gauss-Markov assumptions state that (i.e., all errors have the same variance; that is "homoscedasticity"), and for ; that is "uncorrelatedness." A linear unbiased estimator of β1 is a linear combination in which the coefficients ci are not allowed depend on the earlier coefficients.
Ultracentrifuge - we will focus on the discussion of the analytical ultracentrifuge. Theodor Svedberg invented the analytical ultracentrifuge in 1925, and won the Nobel Prize in Chemistry in 1926 for his invention. With the analytical ultracentrifuge, the sample being spun is observable through an optical detection system that allows the operator to observe the sample concentration in real time during the experiment. With modern instrumentation, these observations are electronically stored and computerized and can be analyzed after the fact. Two kinds of experiments are commonly performed on these instruments, sedimentation velocity experiments and sedimentation equilibrium experiments. The first are sensitive to both the shape and molecular weight of the sample being studied, whereas the second are insensitive to the shape, but are sensitive to the molecular weight of the sample being studied. The.
Gauge theory - regions. So, the best way to summarize it is to say it is symmetry transformations are localized. In mathematics, a gauge is some degree of freedom within a theory that has no observable effect. In fact, most of gauge theory as presented here is a topic of mathematical study in itself. A gauge transformation is thus a transformation of this degree of freedom which does not modify any physical observable properties. Gauge theories are usually discussed in the language of differential geometry. If we have a principal bundle whose base space is space or spacetime and structure group is a Lie group G, then, the space of smooth (although in physics, we often don't deal with smooth functions) sections of this bundle forms a group, called the group of gauge transformations..
Ultimate reality - is defined as everything that actually exists whether or not it is observable, accessible or understandable by science or philosophy or any other human technique. Thus some part of the nature of ultimate reality may be, by definition, unknowable. However the philosophical discipline of metaphysics investigates, so far as it may be investigated, this question. See reality. This raises questions: What is meant by "actually exists"? Is there any definition for or even understanding of "actually exists" that is not circular? What is the difference between ultimate reality and reality?.
