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Giulio Racah

Italian–Israeli physicist and mathematician (1909–1965)

Summary

Italian–Israeli physicist and mathematician (1909–1965)

Field	Value
name	Giulio Racah
native_name	ג'וליו רקח
native_name_lang	he
image	Giulio Racah. Photograph by Harris. Wellcome V0027050.jpg
birth_date	February 9, 1909
birth_place	Florence, Italy
death_date
death_place	Florence, Italy
awards	Weizmann Prize (1953)

Hebrew University]] [[Givat Ram]] campus in [[Jerusalem

Giulio (Yoel) Racah (; February 9, 1909 – August 28, 1965) was an Italian–Israeli physicist and mathematician. He was Acting President of the Hebrew University of Jerusalem from 1961 to 1962.

The crater Racah on the Moon is named after him.

Biography

Giulio (Yoel) Racah was born in Florence, Italy. On his mother's side, Racah's family claimed to trace its ancestry in Italy back to the destruction of the Second Temple. He earned his Doctorate from the University of Florence in 1930, and continued his studies at Rome with Enrico Fermi.

In 1939, due to application of Anti-Jewish laws in Italy, Racah emigrated to the British Mandate of Palestine. In the 1948 Arab–Israeli War, Racah served as deputy commander of the Israeli forces defending Mount Scopus.

Racah died at the age of 56, apparently asphyxiated by gas from a faulty heater while visiting Florence.

Academic and scientific career

In 1937 Racah was appointed Professor of Physics at the University of Pisa. In 1939, after his move to Palestine, he was appointed Professor of Theoretical Physics at the Hebrew University of Jerusalem, He later became Dean of the Faculty of Sciences and finally Rector and acting president from 1961 to 1962, following Benjamin Mazar and succeeded by Eliahu Eilat. The physics institute at the Hebrew University is named "The Racah Institute of Physics".

Racah's research was mainly in the fields of quantum physics and atomic spectroscopy. He first devised a systematic general procedure for classifying the energy levels of open shell atoms, which remains to this day the accepted technique for practical calculations of atomic structure. This formalism was described in a monograph coauthored by his cousin Ugo Fano (Irreducible Tensorial Sets, 1959).

Awards and recognition

In 1958, Racah was awarded the Israel Prize in exact sciences.

References

(1965). "Giulio Racah". Physics Today.
(2017-09-01). "Office of the President | האוניברסיטה העברית בירושלים | The Hebrew University of Jerusalem". New.huji.ac.il.
(2009). "Giulio Racah and theoretical physics in Jerusalem". Archive for History of Exact Sciences.
"Giulio Racah".
"Racah, Giulio".
"Giulio Racah".
"Jewish Virtual Library, sourced from Encyclopaedia Judaica".
(2017-09-01). "Office of the President | האוניברסיטה העברית בירושלים | The Hebrew University of Jerusalem". New.huji.ac.il.
"Israel Prize recipients in 1958 (in Hebrew)". Israel Prize Official Site.

Wikipedia Source

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