* 1900 – Gontran de Poncins, French writer and adventurer ( d. 1962 )

The decisive colonial battle for Chad was fought on April 22, 1900 at Battle of Kousséri between forces of French Major Amédée-François Lamy and forces of the Sudanese warlord Rabih az-Zubayr.

* 1900 – Marc Allégret, French film director and screenwriter ( d. 1973 )

Following the decisive Ethiopian victory at Adwa, Menelik II rapidly negotiated a series of treaties fixing Ethiopia's boundaries — with French Somaliland in March 1897, British Somaliland a few months later in June 1897, with Italian Eritrea in 1900, Anglo-Egyptian Sudan in 1902, British East Africa in 1907, and Italian Somaliland in 1908 — which simplified this problem on one level.

However, in 1900 the French scientist Paul Villard discovered a third neutrally charged and especially penetrating type of radiation from radium, and after he described it, Rutherford realized it must be yet a third type of radiation, which in 1903 Rutherford named gamma rays.

* 1900 – Madeleine Renaud, French theater actress ( d. 1994 )

* 1900 – Robert Le Vigan, French actor ( d. 1972 )

* 1900 – Nathalie Sarraute, French writer ( d. 1999 )

In the 1890s color lithography became greatly popular with French artists, Toulouse-Lautrec most notably of all, and by 1900 the medium in both color and monotone was an accepted part of printmaking, although France and the US have used it more than other countries.

* 1900 – N ' Djamena is founded as Fort-Lamy by French commander Émile Gentil

* 1822 – Joseph Louis François Bertrand, French mathematician ( d. 1900 )

* 1900 – Henri Jeanson, French writer and journalist ( d. 1970 )

* 1994 – Madeleine Renaud, French actress ( b. 1900 )

* 1831 – Alexandre Falguière, French sculptor and painter ( d. 1900 )

Diaghilev was soon responsible for the production of the Annual of the Imperial Theaters in 1900, and promptly offered assignments to his close friends: Léon Bakst would design costumes for the French play Le Coeur de la Marquise, while Benois was given the opportunity to produce Sergei Taneyev's opera Cupid's Revenge.

Upon repair, rigid airship technology proved its potential in subsequent flights ( the second and third flights were on 17 October 1900 and 24 October 1900 ) beating the 6 m / s velocity record of the French airship La France by 3 m / s.

* June 8 – Robert Desnos, French poet and resistance fighter ( b. 1900 )

* September 19 – Germaine Cernay, French mezzo soprano ( b. 1900

* René Pellos, French artist ( b. 1900 )

* June 19 – Maurice Jaubert, French composer ( b. 1900 )

* November 3 – Marc Allégret, French film director ( b. 1900 )

** Robert Florey, French screenwriter ( b. 1900 )

* January 15 – Yves Tanguy, French painter ( b. 1900 )

Chromatography, literally " color writing ", was first employed by Russian scientist Mikhail Tsvet in 1900.

* 1900 – Mikhail Lavrentyev, Russian scientist ( d. 1980 )

1895 ), in which the prominent ethnologist is seen performing an incantation in a Zuñi pueblo ; Professor Henry A. Rowland ( 1897 ), a brilliant scientist whose study of spectroscopy revolutionized his field ; Antiquated Music ( 1900 ), in which Mrs. William D. Frishmuth is shown seated amidst her collection of musical instruments ; and The Concert Singer ( 1890 – 92 ), for which Eakins asked Weda Cook to sing " O rest in the Lord ", so that he could study the muscles of her throat and mouth.

The Right Honourable John Lubbock, 1st Baron Avebury MP FRS DCL LLD ( 30 April 1834 – 28 May 1913 ), known as Sir John Lubbock, 4th Baronet from 1865 until 1900, was a banker, Liberal politician, philanthropist, scientist and polymath.

Ragnar Arthur Granit ForMemRS ( October 30, 1900, Riihimäki, Finland – March 12, 1991, Stockholm, Sweden ) was a Finnish / Swedish scientist who was awarded the Nobel Prize in Physiology or Medicine in 1967

David Edward Hughes ( 16 May 1831 – 22 January 1900 ), was a British scientist and musician.

Sir John Bennet Lawes, 1st Baronet FRS ( 28 December 1814 – 31 August 1900 ) was an English entrepreneur and agricultural scientist.

Constantin Perskyi ( Константин Дмитриевич Перский ) ( June 2, 1854-April 5, 1906 ) was a Russian scientist who is credited with coining the word television in a paper read ( in French ) at the International World Fair in Paris on 25 August 1900 at the 1st International Congress of Electricity which ran from 18 to 25 August.

* Thomas Preston ( scientist ) ( 1860 – 1900 ), Irish scientist

With Sir William Armstrong's effective retirement from active control in about 1890, Noble's primary role changed from scientist to businessman, formally becoming chairman in 1900, and he oversaw much of this growth of the company.

Petre P. Carp (; also Petrache Carp, Francized Pierre Carp, occasionally Comte Carpe ; June 28 or 29, 1837 – June 19, 1919 ) was a Moldavian-born Romanian statesman, political scientist and culture critic, one of the major representatives of Romanian liberal conservatism, and twice the country's Prime Minister ( 1900 – 1901, 1910 – 1912 ).

Pedro Paulet Mostajo ( July 2, 1874 in Arequipa, Peru – 1945 in Buenos Aires, Argentina ) was a Peruvian scientist who allegedly in 1895 was the first person to build a liquid-fuel rocket engine and, in 1900, the first person to build a modern rocket propulsion system.

* Edmond de Sélys Longchamps ( 1813 – 1900 ), Belgian politician and scientist

* Clifford C. Furnas ( 1900 – 1969 ), author, Olympic athlete, scientist, expert on guided missiles, university president, and public servant

The ABO blood group system is widely credited to have been discovered by the Austrian scientist Karl Landsteiner, who found three different blood types in 1900 ; he was awarded the Nobel Prize in Physiology or Medicine in 1930 for his work.

Baron Michel Edmond de Sélys Longchamps ( 25 May 1813-11 December 1900 ) was a Belgian liberal politician and scientist.

The ABO blood group system is widely credited to have been founded by the Austrian scientist Karl Landsteiner, who discovered three different blood types in 1900.

Samuel Stephens Kistler ( March 26, 1900 – November 1975 ) was an American scientist and chemical engineer, best known as the inventor of aerogels, one of the lightest known solid materials.

After 1900 Krylov actively collaborated with Stepan Makarov, admiral and maritime scientist, working on the ship floodability problem.