* Andrew Ainslie Common ( 1841 – 1903 ), built his own very large reflecting telescopes and demonstrated that photography could record astronomical features invisible to the human eye.

* 1903 – The Kishinev pogrom in Kishinev ( Bessarabia ) begins, forcing tens of thousands of Jews to later seek refuge in Israel and the Western world.

* 1903 – Mickey Cochrane, American baseball player ( d. 1962 )

* 1903 – Harold Edgerton, American electrical engineer ( d. 1990 )

* 1903 – Jan Tinbergen, Dutch economist, recipient of the Bank of Sweden Prize ( d. 1994 )

* 1903 – Ferenc Keserű, Hungarian water polo player ( d. 1968 )

* 1819 – Sir George Stokes, 1st Baronet, Irish-English mathematician and physicist ( d. 1903 )

After what the MCC saw as the problems of the earlier professional and amateur series they decided to take control of organising tours themselves, and this led to the first MCC tour of Australia in 1903 – 04.

* 1903 – Fall of the Ottoman Empire: an unsuccessful uprising led by the Internal Macedonian Revolutionary Organization against Ottoman Turkey, also known as the Ilinden – Preobrazhenie Uprising, takes place.

In Serbia Nikola Pašić ( 1845 – 1926 ) and his Radical Party dominated Serbian politics after 1903 ; they also monopolized power in Yugoslavia from 1918 to 1929 ; during the dictatorship of the 1930s, it furnished the prime minister.

* 1903 – Macedonian rebels in Kruševo proclaim the Kruševo Republic, which exists only for 10 days before Ottoman Turks lay waste to the town.

* 1903 – Habib Bourguiba, Tunisian politician ( d. 2000 )

* 1903 – Louis Leakey, Kenyan-English archaeologist ( d. 1972 )

* 1903 – A 30 million cubic-metre landslide kills 70 in Frank, Alberta, Canada.

* 1876 – Alexander I of Serbia ( d. 1903 )

* Adrian ( costume designer ) ( 1903 – 1959 ), born Adrian Adolph Greenberg, costume designer for over 250 films

* Adrian Rollini ( 1903 – 1956 ), American multi-instrumentalist best known for his jazz music

* 1903 – German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright brothers.

* 1903 – James Gould Cozzens, American novelist ( d. 1978 )

* 1903 – Lewis Sargent, American actor ( d. 1970 )

* 1826 – Karl Gegenbaur, German anatomist ( d. 1903 )

* 1903 – Arpad Elo, American chess player, created the Elo rating system ( d. 1992 )

Alexander I or Aleksandar Obrenović ( Cyrillic: Александар Обреновић ; 14 August 1876 – 11 June 1903 ) was king of Serbia from 1889 to 1903 when he and his wife, Queen Draga, were assassinated by a group of Army officers, led by Colonel Dragutin Dimitrijević

* April 8 – Dorothy Sebastian, American actress ( b. 1903 )

One of S. F. Edge's leading drivers, Miss Dorothy Levitt, was refused entry despite having been the ' first English-woman to compete in a motor race ' in 1903, and holding the ' Ladies World Land Speed Record '.

Dorothy Levitt driving the Napier motor yacht 1903

In 1903, Pamela launched her own magazine under the title The Green Sheaf, with contributions by Yeats, Christopher St John ( Christabel Marshall ), Cecil French, A. E. ( George William Russell ), Gordon Craig ( Ellen Terry's son ), Dorothy Ward, John Todhunter, and others.

* Dorothy Sebastian ( 1903 – 1957 ), actress

" ( Following Anna Laughlin's portrayal of the character in the popular 1903 Broadway version of The Wizard of Oz, Baum began to indicate that Dorothy speaks in childish contractions with Ozma of Oz, and continued to do so throughout the series ).

In 1903 Edge's eye for publicity created a world first when, on October 2, Dorothy Levitt won her class at the Southport Speed Trials driving his 12 Hp Gladiator, shocking British society as she was the first woman, a working secretary, to compete in a ' motor race '.

He died at 55 Alexandra Road, St John's Wood, London, on 5 August 1958 at the age of eighty and was survived by his wife Dorothy (' Dot ') Elizabeth Hadfield whom he had married in 1903.

In 1903, Dorothy ( 37 ) married the French painter Simon Bussy ( 1870 – 1954 ), who knew Matisse, and was on the fringes of the Bloomsbury circle.

On 8 August 1903 Levitt drove the Napier at Cowes and won the race.

In October 1903 Levitt won the Championship of the Seas at Trouville, and the French government bought the boat for £ 1, 000.

After 1895 the number increases, and in the next thirty years there is only one year for which there is no dated poem -- 1903, when Hardy was at work on The Dynasts.

The single largest organization of Anthropologists is the American Anthropological Association ( AAA ), which was founded in 1903.

* 1903 – The Russian battleship Slava, the last of the five s, is launched.

But, by 1903, he understood that an antigen induces the production of immune bodies ( antibodies ) and wrote that the word antigen is a contraction of " Antisomatogen

In addition to Triumphant Democracy ( 1886 ), and The Gospel of Wealth ( 1889 ), he also wrote An American Four-in-hand in Britain ( 1883 ), Round the World ( 1884 ), The Empire of Business ( 1902 ), The Secret of Business is the Management of Men ( 1903 ), James Watt ( 1905 ) in the Famous Scots Series, Problems of Today ( 1907 ), and his posthumously published autobiography Autobiography of Andrew Carnegie ( 1920 ).

While there are many competing claims for the earliest powered, heavier-than-air flight, the most widely-accepted date is December 17, 1903 by the Wright brothers.

The Arrhenius definition of acid – base reactions is a development of the hydrogen theory of acids, devised by Svante Arrhenius, which was used to provide a modern definition of acids and bases that followed from his work with Friedrich Wilhelm Ostwald in establishing the presence of ions in aqueous solution in 1884, and led to Arrhenius receiving the Nobel Prize in Chemistry in 1903 for " recognition of the extraordinary services ... rendered to the advancement of chemistry by his electrolytic theory of dissociation ".

Although the term “ biochemistry ” seems to have been first used in 1882, it is generally accepted that the formal coinage of biochemistry occurred in 1903 by Carl Neuberg, a German chemist.

As a member of the high-minor league level International League, the Orioles competed at what is now known as the AAA level from 1903 – 1953.

It had been pointed out previously by J. J. Thomson in his series of lectures at Yale University in May 1903 that the dynamic equilibrium between the velocity generated by a concentration gradient given by Fick's law and the velocity due to the variation of the partial pressure caused when ions are set in motion " gives us a method of determining Avogadro's Constant which is independent of any hypothesis as to the shape or size of molecules, or of the way in which they act upon each other ".

The gorge is the site of the Cheddar Caves, where Cheddar Man was found in 1903.

One of his earliest surviving works, under the guidance of his anatomy teacher, Dimitrie Gerota, is a masterfully rendered écorché ( statue of a man with skin removed to reveal the muscles underneath ) which was exhibited at the Romanian Athenaeum in 1903.

In the 1903 book titled The Art of Cross-Examination by Francis L. Wellmann much effort is devoted to highlighting components of cross-examination and the impact on trials of the past century.

He is not perfectly trustworthy in details, and his agenda is always to inculcate culturally " correct " Stoic opinions, perhaps so that his readers will not feel guilty, but Jane Ellen Harrison found survivals of archaic rites mentioned by Aelian very illuminating in her Prolegomena to the Study of Greek Religion ( 1903, 1922 ).

The spelling is the anglicized version of the Hindi word and as a colloquial Anglo-Indian word with this meaning, it appears in the Glossary of Colloquial Anglo-Indian Words and Phrases ( 1903 ).

* 1903 – The United States Department of Commerce and Labor is established ( later split into Department of Commerce and Department of Labor ).

The Protocols of the Elders of Zion is an alleged secret document which was published and printed for the first time in 1903.

His gravestone bears the simple epitaph: " Here lies Eric Arthur Blair, born 25 June 1903, died 21 January 1950 "; no mention is made on the gravestone of his more famous pen-name.

United States Naval Station Guantanamo Bay ( also called Gitmo or GTMO ) is located on of land and water at Guantánamo Bay, Cuba which the United States leased for use as a coaling ( fueling ) station following the Cuban-American Treaty of 1903.

In 1903, large reserves of helium were found in natural gas fields in parts of the United States, which is by far the largest supplier of the gas today.

The 1903 article The Refutation of Idealism is one of the first demonstrations of Moore's commitment to analysis.

* 1903 – The Ford Motor Company is incorporated.