The sequence of events leading to his important discovery still remains ambiguous but it seems that one of the advanced students at the university related that the first direct event that led to the publication of Oersted's discovery occurred during a private lecture made before a group of other advanced students in the spring of 1820.

This has led some authors to advocate that Giesel alone should be credited with the discovery.

J. J. Thomson created a technique for separating atom types through his work on ionized gases, which subsequently led to the discovery of stable isotopes.

More recent observations made in the laboratory of antibiosis between micro-organisms led to the discovery of natural antibacterials produced by microorganisms.

The discovery of such a powerful antibiotic was unprecedented, and the development of penicillin led to renewed interest in the search for antibiotic compounds with similar efficacy and safety.

Florey credited Dubos with pioneering the approach of deliberately and systematically searching for antibacterial compounds, which had led to the discovery of gramicidin and had revived Florey's research in penicillin.

The 1940 discovery of a lost work by Vincent of Lérins, which bears a striking similarity to much of the language of the Athanasian Creed, have led many to conclude that the creed originated either with Vincent or with his students.

Aberration should not be confused with stellar parallax, although it was an initially fruitless search for parallax that first led to its discovery.

The discovery of chlorpromazine's psychoactive effects in 1952 led to greatly reduced use of restraint, seclusion, and sedation in the management of agitated patients, and also led to further research that resulted in the development of antidepressants, anxiolytics, and the majority of other drugs now used in the management of psychiatric conditions.

The publication of Total Baseball led to the discovery of several " phantom ballplayers ", such as Lou Proctor, who did not belong in official record books and were removed.

The greed for gold led to the discovery of the process for its purification, even though the underlying principles were not well understood — it was thought to be a transformation rather than purification.

It was fire that led to the discovery of iron and glass.

Early twentieth-century experiments on the physics of very small-scale phenomena led to the discovery of phenomena which could not be predicted on the basis of classical physics, and to the development of new models ( theories ) that described and predicted very accurately these micro-scale phenomena.

This was a major discovery in an important field of mathematics ; construction problems had occupied mathematicians since the days of the Ancient Greeks, and the discovery ultimately led Gauss to choose mathematics instead of philology as a career.

The discovery of Ceres led Gauss to his work on a theory of the motion of planetoids disturbed by large planets, eventually published in 1809 as Theoria motus corporum coelestium in sectionibus conicis solem ambientum ( Theory of motion of the celestial bodies moving in conic sections around the Sun ).

She called this experience " the falling apple " that led to her discovery of Christian Science.

She referred to this event as her " Great Discovery ", the " falling apple " that led to her " discovery how to be well " herself ( ibid.

This led to a weakening of the domestic economy after Columbus ' discovery of America, as the economy became dependent on colonial activities ( plundering, mining, cattle, plantations, trade, etc.

It was here that during 1935, the Regent, Reting Rinpoche, received a clear vision of three Tibetan letters and of a monastery with a jade-green and gold roof, and a house with turquoise roof tiles, which led to the discovery of Tenzin Gyatso, the 14th Dalai Lama.

The success of his discovery soon spread around Europe and for example was used en masse in the Spanish Balmis Expedition, a three year long mission to the Americas, Philippines, Macao, China, and Saint Helena Island led by Dr. Francisco Javier de Balmis with the aim of giving thousands the smallpox vaccine.

This discovery led to the well-known axiom: like-charged objects repel and opposite-charged objects attract.

This discovery led to less emphasis on learning the classics because they found that studying the classics does not contribute to overall general intelligence.

Reluctant, as usual, to interpret state legislation -- such interpretation can only be a `` forecast rather than a determination '' -- Mr. Justice Frankfurter led a unanimous Court to vacate the injunction.

The potato chip industry these days is growing, not only as a result of population increase and public acceptance of convenience foods, but also because of a combination of circumstances that has led to growth by merger.

While accompanying Mallowan on countless archaeological trips ( spending up to 3 – 4 months at a time in Syria and Iraq at excavation sites at Ur, Ninevah, Tell Arpachiyah, Chagar Bazar, Tell Brak, and Nimrud ), Christie not only wrote novels and short stories, but also contributed work to the archaeological sites, more specifically to the archaeological restoration and labeling of ancient exhibits which includes tasks such as cleaning and conserving delicate ivory pieces, reconstructing pottery, developing photos from early excavations which later led to taking photographs of the site and its findings, and taking field notes.

The ruthless and belligerent Armstrong led his team back to England in 1921 where his men lost only two games late in the tour to narrowly miss out of being the first team to complete a tour of England without defeat.

Alboin's death deprived the Lombards of the only leader who could have kept the newborn Germanic entity together, the last in the line of hero-kings who had led the Lombards through their migrations from the vale of the Elbe to Italy.

This led to his excommunication by the holy see and possibly precipitated his death, and his son Dom Dinis's premature rise to the throne at only 18 years old.

Ambrose was the only Father of the Church to leave behind so many writings on the subject and his attentions naturally enough led to the formation of communities which later became formal monasteries of women.

Wellington is better-known to posterity, because he led one of the two Allied armies at the final decisive victory of the Napoleonic Wars ( the battle of Waterloo in 1815 ), although Wellington's superior reputation is perhaps also because he only once faced Napoleon, whereas Charles was confronted by Napoleon in battle more times than any other commander.

The introduction of free trade between Russia and Belarus in mid-1995 led to a spectacular growth in bilateral trade, which was only temporarily reversed in the wake of the financial crisis of 1998.

After the battle was won, the inability to contain enemies who escaped death led to widespread epidemics affecting not only the enemy forces, but also surrounding regions ' inhabitants.

On his return to Naples, Nelson was greeted with a triumphal procession led by King Ferdinand IV and Sir William Hamilton and was introduced for only the third time to Sir William's wife Emma, Lady Hamilton, who fainted violently at the meeting, and apparently took several weeks to recover from her injuries.

It was only after the hastily improvised plan for the invasion of Western Europe in 1940 and its successful conclusion, which led the German General Staff to believe that decisive battles were not obsolete.

These observations led him to suspect that the flea might be an intermediary factor in the transmission of plague, since people acquired plague only if they were in contact with recently dead rats, who had died less than 24 hours before.

This sudden influx of men led to a shortage of RIC uniforms, and the new recruits were issued with khaki army uniforms ( usually only trousers ) and dark green RIC or blue British police surplus tunics, caps and belts.

In the December 1945 Albanian election, the only effective ballot choices were those of the communist Democratic Front ( Albania ), led by Enver Hoxha.

Aside from the services he provided guiding the only centre of literacy in the region, his reputation as a holy man led to his role as a diplomat among the tribes ; there are also many stories of miracles which he performed during his work to convert the Picts.

They led the Wild Card by 1. 5 games over San Francisco and Houston on September 25, and both of those teams lost that day, giving the Cubs a chance at increasing the lead to a commanding 2. 5 games with only eight games remaining in the season, but reliever LaTroy Hawkins blew a save to the Mets, and the Cubs lost the game in extra innings, a defeat that seemingly deflated the team, as they proceeded to drop 6 of their last 8 games as the Astros won the Wild Card.

The team's struggles led to the firing of manager Don Baylor, the only manager in franchise history, following the season.

Bishop Christian asked the new Pope Honorius III for the consent to start another Crusade, however a first campaign in 1217 proved a failure and even the joint efforts by Duke Konrad with the Polish High Duke Leszek I the White and Duke Henry I the Bearded of Silesia in 122 / 23 only led to the reconquest of Chełmno Land but did not stop the Prussian invasions.

This led to growing tensions between the two brothers, which were only heightened by Constans finally coming of age and Constantine refusing to give up his guardianship.

Medieval military doctrine employed them as part of a combined-arms force along with various kinds of foot troops ; however medieval chroniclers tended to pay undue attention to the knights at the expense of the rank and file, which led early students of military history to suppose that this heavy cavalry was the only force that mattered on medieval European battlefields, which was not the case.

" The decision to negotiate peace with the Germans was only reached when Lenin threatened to resign, which in turn led to a temporary coalition between Lenin's supporters and those of Trotsky and others.

However, Khrushchev and Malenkov were able to gather enough support for Beria's ouster, but only when a rumour of a potential coup led by Beria began to take hold within the party leadership.

The inadvertent destruction of many of these eggs by a human mining colony led the mother Horta to respond by killing the colonists and sabotaging their equipment ; it was only through a Vulcan mind meld that the race's benevolence and intelligence were discovered and peaceful relations established.

Of the Maritime provinces, only Nova Scotia and New Brunswick were initially party to the BNA Act, Prince Edward Island's reluctance, combined with a booming agricultural and fishing export economy having led to that colony opting not to sign on.