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first and theoretical
These theoretical relationships are more clearly illustrated in Fig. 7 and their sum can be seen to correlate in form with practical measurements made with the Hesiometer as illustrated in the first portion of Fig. 5 for the cutting mechanism.
Furthermore, a firm grasp of set theoretical concepts from a naive standpoint is important as a first stage in understanding the motivation for the formal axioms of set theory.
Paul Drude proposed the first theoretical model for a classical electron moving through a metallic solid.
In 1997 Skulan and DePaolo presented the first evidence of change in seawater < sup > 44 </ sup > Ca /< sup > 40 </ sup > Ca over geologic time, along with a theoretical explanation of these changes.
Building on the founding discoveries and theories in the history of quantum mechanics, the first theoretical calculations in chemistry were those of Walter Heitler and Fritz London in 1927.
" Their doctrines have numerous resemblances to those of the Bogomils and the earlier Paulicians as well as the Manicheans and the Christian Gnostics of the first few centuries AD, although, as many scholars, most notably Mark Pegg, have pointed out, it would be erroneous to extrapolate direct, historical connections based on theoretical similarities perceived by modern scholars.
The need to break German codes in World War II led to advances in cryptography and theoretical computer science, with the first programmable digital electronic computer being developed at England's Bletchley Park.
At age 24, Fermi took a professorship at the University of Rome ( one of the first three in theoretical physics in Italy ) which he won in a competition whose selection committee was chaired by Professor Orso Mario Corbino, director of the Institute of Physics.
* 1927 – German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
While at the Los Alamos National Laboratory, Fuchs was responsible for many significant theoretical calculations relating to the first fission weapons and later, the early models of the hydrogen bomb, the first fusion weapon.
In 1917, Albert Einstein established the theoretical foundations for the laser and the maser in the paper Zur Quantentheorie der Strahlung ( On the Quantum Theory of Radiation ); via a re-derivation of Max Planck ’ s law of radiation, conceptually based upon probability coefficients ( Einstein coefficients ) for the absorption, spontaneous emission, and stimulated emission of electromagnetic radiation ; in 1928, Rudolf W. Ladenburg confirmed the existences of the phenomena of stimulated emission and negative absorption ; in 1939, Valentin A. Fabrikant predicted the use of stimulated emission to amplify “ short ” waves ; in 1947, Willis E. Lamb and R. C. Retherford found apparent stimulated emission in hydrogen spectra and effected the first demonstration of stimulated emission ; in 1950, Alfred Kastler ( Nobel Prize for Physics 1966 ) proposed the method of optical pumping, experimentally confirmed, two years later, by Brossel, Kastler, and Winter.
As an identifiable theoretical system it first emerged in Italy in the 1960s from workerist ( operaismo ) communism.
The final volume of Halliday's 10 volumes of Collected Papers is called Language in society, reflecting his theoretical and methodological connection to language as first and foremost concerned with " acts of meaning ".
The first detection of tau neutrino interactions was announced in summer of 2000 by the DONUT collaboration at Fermilab, making it the latest particle of the Standard Model to have been directly observed ; its existence had already been inferred by both theoretical consistency and experimental data from the Large Electron – Positron Collider.
A major theoretical issue is: " Which came first, the nation or the nation state?
Norbert Wiener proposed the first set theoretical definition of the ordered pair in 1914:
On War is formed by the first three volumes and represents his theoretical explorations.
Eysenck himself lent theoretical support to the English National Party ( which also opposed " Hitlerite " Nazism ), and was interviewed in the first issue of their journal The Beacon in relation to his controversial views on relative intelligence between different races.
This was an enormous theoretical leap, but the concept was strongly resisted at first because it contradicted the wave theory of light that followed naturally from James Clerk Maxwell's equations for electromagnetic behavior, and more generally, the assumption of infinite divisibility of energy in physical systems.
: set forth one of the first expansive theoretical treatments of Postmodernism as a historical period, intellectual trend and social phenomenon in a series of lectures at the Whitney Museum, later expanded as Postmodernism, or The Cultural Logic of Late Capitalism ( 1991 ).
Charles Cros, a French poet and amateur scientist, is the first person known to have made the conceptual leaps from recording sound as a traced line to the theoretical possibility of reproducing the sound from the tracing and then to a definite method for accomplishing the reproduction.
The psychometrician L. L. Thurstone, founder and first president of the Psychometric Society in 1936, developed and applied a theoretical approach to measurement referred to as the law of comparative judgment, an approach that has close connections to the psychophysical theory of Ernst Heinrich Weber and Gustav Fechner.
In 1946, American theoretical astrophysicist Lyman Spitzer was the first to conceive the idea of a telescope in outer space, a decade before the Soviet Union launched the first satellite, Sputnik.

first and description
Dickens suggests the economic evils of such a society on the first page of his novel in the description of Pip's five little dead brothers `` who gave up trying to get a living exceedingly early in that universal struggle '', who seemed to have `` all been born on their backs with their hands in their trousers-pockets, and had never taken them out in this state of existence ''.
The name was first used in the English language in 1768 by R. Edwin in a colorful description of a large snake found in Ceylon ( now Sri Lanka ), most likely a reticulated python, Python reticulatus.
Swiss naturalist Conrad Gesner used the words lituum alpinum for the first known detailed description of the alphorn in his De raris et admirandis herbis in 1555.
The first string has a short English-language description, namely " ab 32 times ", which consists of 11 characters.
To define the Kolmogorov complexity, we must first specify a description language for strings.
A more in-depth description of arcology's design principles can be found in " The Last Redoubt " from The Night Land by William Hope Hodgson, first published in 1912.
This description prompted the first suggestions of regular interstate club competition and of overcoming the dichotomy and establishing a national league.
The first known description of an anemometer was given by Leon Battista Alberti around 1450.
Although bluetongue disease was already recognized in South Africa in the early 19th century, a comprehensive description of the disease was not published until the first decade of the 20th century.
The first Book of Samuel begins with a description of the prophet Samuel's birth and of how God called to him as a boy.
However, according to George Sussman, the first obvious medical description of plague in China dates to 1644.
In Vita Ansgari (" The life of Ansgar ") monk and later archbishop of Hamburg-Bremen Rimbert gives the first known description of Birka.
The first published description of the blue whale comes from Robert Sibbald's Phalainologia Nova ( 1694 ).
The first attempt at a microscopic description of magnetism was by Wilhelm Lenz and Ernst Ising through the Ising model that described magnetic materials as consisting of a periodic lattice of quantum spins that collectively acquired magnetization.
In 1927, the first mathematically complete quantum description of a simple chemical bond, i. e. that produced by one electron in the hydrogen molecular ion, H < sub > 2 </ sub >< sup >+</ sup >, was derived by the Danish physicist Oyvind Burrau.
On-sight climbing means to attempt a rock climbing route for the first time without inspection or any form of " beta " ( such as route description, watching others climb it, etc.
Realizing that the grammatical structures of Bantu languages are quite different from those of European languages, he was one of the first African linguists of his time to abandon the Euro-centric approach to language description for a more locally grounded one.
* Letter of Andrea Corsali 1516-1989: with additional material (" the first description and illustration of the Southern Cross, with speculations about Australia ...") digitised by the National Library of Australia.
It was the Short Range Committee, chaired by Joseph Wegstein of the US National Bureau of Standards, that during the following months created a description of the first version of COBOL.
A description of how the device could be used as a shift register and as a linear and area imaging devices was described in this first entry.
Although migration of cells was detected from the early days of the development of microscopy ( Leeuwenhoek ), erudite description of chemotaxis was first made by T W. Engelmann ( 1881 ) and W. F.
In 1912, William Mestrezat gave the first accurate description of the chemical composition of the CSF.
In 1954 Eisenhower first articulated the domino theory in his description of the threat presented by the spread of communism.
The Outline of English Phonetics which followed in 1918 is the first truly comprehensive description of British Received Pronunciation, and indeed the first such description of the standard pronunciation of any language.

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