`` History has this in common with every other science: that the historian is not allowed to claim any single piece of knowledge, except where he can justify his claim by exhibiting to himself in the first place, and secondly to any one else who is both able and willing to follow his demonstration, the grounds upon which it is based.

Esmarch was among those who witnessed Oersted's first demonstration of his discovery.

Henry also proposed building a demonstration version of the full engine, with a smaller storage capacity: " perhaps for a first machine ten ( columns ) would do, with fifteen wheels in each ".

Other anti-war demonstrations were organized by the antiglobalization movement: see for example the large demonstration, organized against the impending war in Iraq, which closed the first European Social Forum in November, 2002 in Florence, Italy.

Eduard Buchner contributed the first demonstration of a complex biochemical process outside of a cell in 1896: alcoholic fermentation in cell extracts of yeast.

" The team's first demonstration before Navy officials took place on 10 May 1946 and was met with enthusiastic approval.

" The Blue Angels ' first public demonstration also netted the team its first trophy, which sits on display at the team's current home at NAS Pensacola.

In Sept 1956, the team added a sixth aircraft to the flight demonstration in the Opposing Solo position, and gave its first performance outside the United States at the International Air Exposition in Toronto, Canada.

In 1992 the Blue Angels deployed for a month-long European tour, their first in 19 years, conducting shows in Sweden, Finland, Russia ( the first foreign flight demonstration team to perform there ), Romania, Bulgaria, Italy, the United Kingdom and Spain.

The first public demonstration was on the BBC television program Tomorrow's World when The Bee Gees ' album Living Eyes ( 1981 ) was played.

Hilbert's first work on invariant functions led him to the demonstration in 1888 of his famous finiteness theorem.

The energy efficiency of electric lighting has increased radically since the first demonstration of arc lamps and the incandescent light bulb of the 19th century.

This demonstration is the first time that ferromagnetism has been demonstrated in a gas.

The first demonstration of ethnic conflict occurred on October 22, 1944, just two days after Ponce ’ s demise.

* 1926: John Logie Baird gives the world's first demonstration of a working television system.

Oliphant had performed experiments in which fast deuterons collided with deuteron targets ( incidentally, the first demonstration of nuclear fusion ).

Dawn, the first NASA operational ( i. e., non-technology demonstration ) mission to use an ion drive for its primary propulsion, is currently on track to explore and orbit the large main-belt asteroids 1 Ceres and 4 Vesta.

* 1935 – Inventor Edwin Armstrong gives the first public demonstration of FM broadcasting in the United States at Alpine, New Jersey.

* 1954 – Georgetown-IBM experiment: the first public demonstration of a machine translation system, is held in New York at the head office of IBM.

On 1 May 1990 the opposition groups held their first big demonstration in Frunze in competition with the officially sanctioned May Day celebrations, and on 25 – 26 May 1990 the opposition groups formed the Kyrgyzstan Democratic Movement as a bloc of several anti-Communist political parties, movements and nongovernment organizations.

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.

In November 1985, it was announced that the first contingent of " armed people " trained as paratroopers had made a demonstration drop.

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.

The Ionian School of philosophers were the first natural philosophers ( φυσιολόγοι: physiologoi ) who tried to explain phenomena according to non-supernatural laws, and Pythagoras introduced the abstract mathematical-relations which formed the basis of the science of mathematics.

His research also involved the study of auroral phenomena, which he conducted with his assistant Olof Hiorter, and he was the first to suggest a connection between the aurora borealis and changes in the magnetic field of the Earth.

His strategy mirrors his teacher Ryle's approach of redefining first person phenomena in third person terms, and denying the coherence of the concepts which this approach struggles with.

Those who believe in Christ should first have faith in Him without becoming engaged in such overwhelming phenomena.

The word is a compound from two Greek terms, ἢλεκτρον, ēlektron, " amber " ( as electrostatic phenomena were first described as properties of amber by the philosopher Thales ), and μαγνήτης, magnētēs, " magnet " ( the magnetic stones found in antiquity in the vicinity of the Greek city of Magnesia, in Lydia, Asia Minor ).

:“ Empirical research must be based on methodological agnosticism with regard to religious and philosophical ‘ first principles ’, and must fully recognize the historicity of religious phenomena.

In 1922, he published his first important scientific work in the Italian journal I Rendiconti dell ' Accademia dei Lincei entitled " On the phenomena occurring near a world line ", where he introduces for the first time the so-called " Fermi coordinates ", and proves that when close to the time line, space behaves as a euclidean one.

Empires and Barbarians: The Fall of Rome and the Birth of Europe ( Oxford University Press ; 2010 ); 734 pages ; Examines the migrations, trade, and other phenomena that shaped a recognizable entity of Europe in the first millennium.

The early physicist Leucippus ( first half of 5th century BCE ) adamantly opposed the idea of direct divine intervention in the universe, instead proposing that natural phenomena had a natural cause.

These are the first recorded historical links between the speed of light and electromagnetic phenomena.

This is particularly the case when one attends to the phenomena of the body ( which is at once body-subject and body-object ), subjective time ( the consciousness of time is neither an act of consciousness nor an object of thought ) and the other ( the first considerations of the other in Husserl led to solipsism ).

However, when confronted with totally unexpected phenomena, such as the first evidence for invisible radiation, experimental scientists often use the same approach as historical scientists: construct a set of hypotheses about the causes and then look for a " smoking gun ".

The formation of the SPR was the first systematic effort to organize scientists and scholars for a critical and sustained investigation of paranormal phenomena.

The census was the Society's first attempt at a statistical evaluation of paranormal phenomena, and the resulting publication in 1886, Phantasms of the Living is still widely referenced in parapsychological literature today.

Thomson Jay Hudson was Chief Examiner of the US Patent Office and Psychical researcher, known for his three laws of psychic phenomena, which were first published in 1893.

The second shortcoming, related to the first, is that in quantum mechanics there is no mechanism to describe particle creation and annihilation ; this is crucial for describing phenomena such as pair production which result from the conversion between mass and energy according to the relativistic relation E = mc < sup > 2 </ sup >.

His first public articulations referring to spiritual experiences or phenomena began in his lectures to the Theosophical Society of 1899.

This was the first indication that sunspots were basically magnetic phenomena, which appeared in pairs that corresponded with two magnetic poles of opposite polarity.

A unified explanation of these phenomena required a theory of solid state physics which developed greatly in the first half of the 20th Century.

The astronomical phenomena included quasars ( 1963 ), the 3-kelvin microwave background radiation ( 1965 ), pulsars ( 1967 ), and the discovery of the first black hole candidates ( 1971 ).

Durkheim sought to create one of the first rigorous scientific approaches to social phenomena.

Such reflection was to take place from a highly modified " first person " viewpoint, studying phenomena not as they appear to " my " consciousness, but to any consciousness whatsoever.

The oldest significant astronomical text that we possess is Tablet 63 of ' Enūma Anu Enlil ', the Venus tablet of Ammi-saduqa, which lists the first and last visible risings of Venus over a period of about 21 years and is the earliest evidence that the phenomena of a planet were recognized as periodic.