1954 deaths

Walter Robert Wilhelm Grotrian (21 April 1890 in Aachen; † 3 March 1954 in Potsdam) was a German astronomer and astrophysicist.
Grotrian studied the emission line from the solar corona in the green region of the spectrum; this emission line could not be attributed to any known chemical element and was thought to be a new element (which scientists named "coronium"). Grotrian and Bengt Edlén from Sweden demonstrated that the two observed emission lines arise from iron atoms that have lost about half their 26 electrons.

Alberto Martini (November 24, 1876 – November 8, 1954) was an Italian painter, engraver, illustrator and graphic designer. Critics have described Martini's range of work from "elegant and epic" to "grotesque and macabre" and consider him one of the precursors of Surrealism.

Alexandre Marius Jacob (29 September 1879 – 28 August 1954), also known by the names Georges, Escande, Férau, Jean Concorde, Attila, and Barrabas, was a French anarchist illegalist.

Georges Vallerey Jr. (21 October 1927 – 4 October 1954) was a French swimmer, born in Amiens, who competed in the 1948 Summer Olympics.

Sir James Caird, Baronet of Glenfarquhar (2 January 1864 – 27 September 1954) was a shipowner and the principal donor in creating the National Maritime Museum, London.

Sir John Traill Cargill, 1st Baronet, DL, JP (10 January 1867 – 24 January 1954) was a Scottish oil magnate.

Ernest Benjamin Esclangon (17 March 1876 – 28 January 1954) was a French astronomer and mathematician.
Born in Mison, Alpes-de-Haute-Provence, in 1895 he started to study mathematics at the École Normale Supérieure, graduating in 1898. Looking for some means of financial support while he completed his doctorate on quasi-periodic functions, he took a post at the Bordeaux Observatory, teaching some mathematics at the university.
During World War I, he worked on ballistics and developed a novel method for precisely locating enemy artillery. When a gun is fired, it initiates a spherical shock wave but the projectile also generates a conical wave. By using the sound of distant guns to compare the two waves, Escaglon was able to make accurate predictions of gun locations.
After the armistice in 1919, Esclangon became director of the Strasbourg Observatory and professor of astronomy at the university the following year. In 1929, he was appointed director of the Paris Observatory and of the International Time Bureau, and elected to the Bureau des Longitudes in 1932. He is perhaps best remembered for initiating in 1933 the first speaking clock service, reportedly to relieve the observatory staff from the numerous telephone calls requesting the exact time. He was elected to the Académie des Sciences in 1939.
Esclangon was the President of the Société astronomique de France (SAF), the French astronomical society, from 1933–1935. In 1935, he received the Prix Jules Janssen, the society's highest award.
Serving as director of the Paris Observatory throughout World War II and the German occupation of Paris, he retired in 1944. He died in Eyrenville, France.
The binary asteroid 1509 Esclangona is named after him.
The lunar crater Esclangon is named after him.
His doctoral students include Daniel Barbier, Édmée Chandon, Louis Couffignal, André-Louis Danjon, and Nicolas Stoyko.

Friedrich Meinecke (October 20, 1862 – February 6, 1954) was a German historian, with national liberal and antisemitic views, who supported the Nazi invasion of Poland. After World War II, as a representative of an older tradition, he criticized the Nazi regime, but continued to express antisemitic prejudices.In 1948, he helped to found the Free University of Berlin in West Berlin, and remained an important figure to the end of his life.

Auguste Marie Louis Nicolas Lumière (19 October 1862 – 10 April 1954) was a French engineer, industrialist, biologist, and illusionist. In 1894 and 1895, he and his brother Louis invented an animated photographic camera and projection device, the cinematograph, which met with worldwide success.
Lumière was born in Besançon. He attended the Martinière Technical School and worked as a manager at the photographic company of his father, Claude-Antoine Lumière. He was invited to attend a demonstration of the Kinetoscope invented by Thomas Edison, which inspired his and his brother's work on the cinematograph. The brothers screened their first film using this device in December 1895, and following the success of this initial venture opened a number of cinemas worldwide. However, Auguste was skeptical of the potential of the device, remarking "My invention can be exploited... as a scientific curiosity, but apart from that it has no commercial value whatsoever".After his work on the cinematograph Lumière began focusing on the biomedical field, becoming a pioneer in the use of X-rays to examine fractures. He also contributed to innovations in military aircraft, producing a catalytic heater to allow cold-weather engine starts. He died in Lyon, aged 91.

Émile Mâle (French: [emil mɑl]; 2 June 1862 – 6 October 1954) was a French art historian, one of the first to study medieval, mostly sacral French art and the influence of Eastern European iconography thereon. He was a member of the Académie française, and a director of the Académie de France à Rome.