* 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

* Calamity Jane Martha Jane Canary ( May 1, 1852 – August 1, 1903 ), better known as Calamity Jane, was an American frontierswoman, and professional scout best known for her claim of being an acquaintance of Wild Bill Hickok.

" By the Way " was originally a column in the Globe, consisting of unsigned humorous pieces ; P. G. Wodehouse was assistant editor of the column from August 1903 and editor from August 1904 to May 1909, during which time he was assisted by Herbert Westbrook.

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 main weapons of assassination chosen organised the successful assassination of King Alexander I of Serbia and his consort Draga ; he confirmed that Captain Dragutin Dimitrijevic, who had personally led the group of Army officers who killed the royal couple in the Old Palace at Belgrade on the night of 28 / 29 May 1903 ( Old Style ), was also the Black Hand's leader.

The funeral of the royal couple Aleksandar Obrenović and Draga Mašin on 29 May 1903 after the May Overthrow

The two had disagreed on the issue as early as March – May 1903, but it was not until the Congress that their differences became irreconcilable and split the party.

Hannah entered a period of remission, but in May 1903 became ill again.

Sir John Carew Eccles, AC FRS FRACP FRSNZ FAAS ( 27 January 1903 – 2 May 1997 ) was an Australian neurophysiologist who won the 1963 Nobel Prize in Physiology or Medicine for his work on the synapse.

ForMemRS ( March 25, 1863 in Louisville, Kentucky – May 2, 1946 ) was a physician, scientist, administrator, and professor of experimental pathology at the University of Pennsylvania ( 1899 – 1903 ).

* May 7 – Mary Philbin, American actress ( b. 1903 )

* May 16 – Eliot Ness, American policeman ( b. 1903 )

* May 17 – Lawrence Welk, American musician ( b. 1903 )

* May 6 – Wilfrid Hyde-White, British actor ( b. 1903 )

* May 1 – Aram Khachaturian, Armenian composer ( b. 1903 )

* May 2 – Giulio Natta, Italian chemist, Nobel Prize laureate ( b. 1903 )

* May 1 – William Primrose, Scottish violist ( b. 1903 )

* May 18 – Margaret Ann Neve, supercentenarian ( d. 1903 )

It originated as the Buick Auto-Vim and Power Company in 1899, an independent internal combustion engine and motor-car manufacturer, and was later incorporated as the Buick Motor Company on May 19, 1903, by Scottish born David Dunbar Buick in Detroit, Michigan.

In 1903 “ the whole of South Russia in May, June and July was aflame ,” including Baku where separate wage struggles culminated in a city-wide general strike, and Tiflis, where commercial workers gained a reduction in the working day, and were joined by factory workers.

Just eight years later, in the Paris – Madrid race of May 1903, the Mors of Fernand Gabriel, running over the same roads, took just under five and a quarter hours for the to Bordeaux, an average of 105 km / h ( 65. 3 mph ).

On 4 May 1903, a group of over 200 Dutch emigrants sailed on the steamship " Oropesa " shipping company " Pacific Steam Navigation Company, from La Rochelle ( La Pallice ) in France.

Benjamin McLane Spock ( May 2, 1903 – March 15, 1998 ) was an American pediatrician whose book Baby and Child Care, published in 1946, is one of the biggest best-sellers of all time.

Benjamin McLane Spock was born May 2, 1903, in New Haven, Connecticut ; his parents were Benjamin Ives Spock, a Yale graduate and long-time general counsel of the New Haven Railroad, and Mildred Louise Stoughton Spock.