On December 2, 1942, physicist Enrico Fermi conducted the world's first controlled nuclear reaction at the University of Chicago as part of the top-secret Manhattan Project.

In 1939, with Enrico Fermi, Szilárd proved this neutron-multiplying reaction in uranium.

Demonstration of a self-sustaining nuclear chain reaction was accomplished by Enrico Fermi and others, in the successful operation of Chicago Pile-1, the first artificial nuclear reactor, in late 1942.

* 1942 – Manhattan Project: A team led by Enrico Fermi initiates the first self-sustaining nuclear chain reaction.

More recent campaigning by anti-nuclear groups has related to several nuclear power plants including the Enrico Fermi Nuclear Power Plant, Indian Point Energy Center, Oyster Creek Nuclear Generating Station, Pilgrim Nuclear Generating Station, Salem Nuclear Power Plant, and Vermont Yankee Nuclear Power Plant.

Several awards, concepts, and institutions are named after Fermi, such as the Enrico Fermi Award, the Enrico Fermi Institute, the Fermi National Accelerator Laboratory, the Fermi Gamma-ray Space Telescope, the Enrico Fermi Nuclear Generating Station, a class of particles called fermions, the synthetic element fermium, and many more.

Enrico Fermi was born in Rome to Alberto Fermi, a Chief Inspector of the Ministry of Communications, and Ida de Gattis, an elementary school teacher.

Fiorello Henry LaGuardia (; born Fiorello Enrico La Guardia ; December 11, 1882September 20, 1947 ) was Mayor of New York for three terms from 1934 to 1945 as a Republican.

Arrigo Boito (; 24 February 184210 June 1918 ), aka Enrico Giuseppe Giovanni Boito, pseudonym Tobia Gorrio, was an Italian poet, journalist, novelist and composer, best known today for his libretti, especially those for Giuseppe Verdi's operas Otello and Falstaff, and his own opera Mefistofele.

Enrico De Nicola (; 9 November 1877 – 1 October 1959 ) was an Italian jurist, journalist, politician, and provisional Head of State of the newborn republic of Italy from 1946 to 1948.

Enrico Anthony " Rick " Lazio (; born March 13, 1958 ) is a former U. S. Representative from the state of New York.

Enrico Chiesa (; born December 29, 1970 in Genoa ) is an Italian football coach and former striker.

Enrico Cecchetti (; 21 June 1850, Rome – 13 November 1928, Milan ) was an Italian ballet dancer, mime, and founder of the Cecchetti method.

* Obituary, NY Times, November 29, 1954, Enrico Fermi Dead at 53 ; Architect of Atomic Bomb

The opera quickly became popular throughout Italy and productions were soon mounted by the following companies: The Teatro di San Carlo ( 14 March 1896, with Elisa Petri as Musetta and Antonio Magini-Coletti as Marcello ); The Teatro Comunale di Bologna ( 4 November 1896, with Amelia Sedelmayer as Musetta and Umberto Beduschi as Rodolfo ); The Teatro Costanzi ( 17 November 1896, with Maria Stuarda Savelli as Mimì, Enrico Giannini-Grifoni as Rodolfo, and Maurizio Bensaude as Marcello ); La Scala ( 15 March 1897, with Angelica Pandolfini as Mimì, Camilla Pasini as Musetta, Fernando De Lucia as Rodolfo, and Edoardo Camera as Marcello ); La Fenice ( 26 December 1897, with Emilia Merolla as Mimì, Maria Martelli as Musetta, Giovanni Apostolu and Franco Mannucci as Rodolfo, and Ferruccio Corradetti as Marcello ); Teatro Regio di Parma ( 29 January 1898, with Solomiya Krushelnytska as Mimì, Lina Cassandro as Musetta, Pietro Ferrari as Rodolfo, and Pietro Giacomello as Marcello ); And the Teatro Donizetti di Bergamo ( 21 August 1898, with Emilia Corsi as Mimì, Annita Barone as Musetta, Giovanni Apostolu as Rodolfo, and Giovanni Roussel as Marcello ).

Enrico Mattei ( April 29, 1906 – October 27, 1962 ) was an Italian public administrator.

Lanza del Vasto, ( Giuseppe Giovanni Luigi Enrico Lanza di Trabia ), ( September 29, 1901 – January 5, 1981 ) was a philosopher, poet, artist, catholic and nonviolent activist.

* November 29 – Enrico Fermi ( born 1901 ), Italian American physicist.

* Compton, A. H. " Establishing Site X: Letter, Arthur H. Compton to Enrico Fermi, September 14, 1942 ", United States Department of Energy ( through predecessor agency the Atomic Energy Commission, ( September 1942 ).

Its last representants Enrico ( died September 12, 1643 ) and Francesco ( 1592-September 21, 1650 ) sold Monterotondo to the Barberini in 1641.

In September 2009, three lawsuits by Parmalat Capital Finance Ltd. and Enrico Bondi, CEO of Parmalat, against Bank of America and auditors Grant Thornton, were dismissed.

On 25 September 1907, Luise married the Italian musician Enrico Toselli in London.

Enrico Cialdini, Duca di Gaeta ( August 10, 1811 – September 8, 1892 ) was an Italian soldier, politician and diplomat.

Enrico Bertaggia ( born September 19, 1964 in Noale, Venice ) is a former racing driver from Italy.

Bruno Pontecorvo (, Bruno Maksimovich Pontekorvo ; August 22, 1913 – September 24, 1993 ) was an Italian-born nuclear physicist, an early assistant of Enrico Fermi and then the author of numerous studies in high energy physics, especially on neutrinos.

Enrico Pascal Valtorta ( Traditional Chinese: 恩理覺主教 ) ( 14 May 1883-3 September 1951 ) was the last Apostolic Vicar and the first Roman Catholic bishop of Hong Kong.

* Enrico " Ninja " Matta ( born in Turin on September 24, 1971 )-Drummer

The opera was first presented in Brazil at the Teatro Amazonas in Manaus on 2 July 1901 with Elvira Miotti as Mimì, Mabel Nelma as Musetta, Michele Sigaldi as Rodolfo, and Enrico De Franceschi as Marcello.

Robert Hofstadter coined the term fermi ( unit ), symbol fm, in honor of the Italian physicist Enrico Fermi ( 1901 – 1954 ), one of the founders of nuclear physics, in Hofstadter's 1956 paper published in the Reviews of Modern Physics journal, " Electron Scattering and Nuclear Structure ".

* Enrico Fermi ( 1901 – 54 ), Nobel Prize winning physicist.

The fermi is named after the Italian physicist Enrico Fermi ( 1901 – 1954 ), one of the founders of nuclear physics.

* Enrico Fermi ( 1901 – 1954 )

* Enrico Fermi ( 1901 – 1954 ), Italian-American physicist

* Enrico Fermi ( 1901 – 1954 ), physicist

* Infanta Maria Cristina Teresa Alejandra Guadalupe Maria de la Concepción Vittoria Eugenia of Spain ( 1911 – 1996 ), who married Enrico Eugenio Marone-Cinzano, 1st Conte Marone-Cinzano.

* 1985 – Enrico Cortese, Italian footballer

* 1938 – Enrico Macias, Algerian-born French singer

* 1963 – Enrico Colantoni, Canadian actor

In particle physics, a fermion ( a name coined by Paul Dirac from the surname of Enrico Fermi ) is any particle characterized by Fermi – Dirac statistics and following the Pauli exclusion principle ; fermions include all quarks and leptons, as well as any composite particle made of an odd number of these, such as all baryons and many atoms and nuclei.

* 1985 – Enrico Patrizio, Italian rugby player

* 1966 – Enrico Annoni, Italian footballer

The four panels depict: The Preservation of Captain Smith by Pocahontas ( 1825 ) by Antonio Capellano, The Landing of the Pilgrims ( 1825 ) and The Conflict of Daniel Boone and the Indians ( 1826 – 27 ) by Enrico Causici, and William Penn ’ s Treaty with the Indians ( 1827 ) by Nicholas Gevelot.

* 1877 – Enrico De Nicola, 1st President of the Italian Republic ( d. 1959 )

* 1962 – A plane carrying Enrico Mattei, post-war Italian administrator, crashes in mysterious circumstances.

* 1932 – Enrico di Giuseppe, American tenor ( d. 2005 )

* 2007 – Enrico Banducci, American nightclub owner ( b. 1922 )

* June 11 – Enrico Berlinguer, Italian Communist politician ( b. 1922 )

* December 2 – Manhattan Project: Below the bleachers of Stagg Field at the University of Chicago, a team led by Enrico Fermi initiates the first self-sustaining nuclear chain reaction ( a coded message, " The Italian navigator has landed in the new world " is then sent to U. S. President Franklin D. Roosevelt ).

* November 13 – Enrico Cecchetti, Italian ballet dancer ( b. 1850 )

* July 1 – Enrico Annoni, Italian footballer

* October 27 – Enrico Mattei, Italian politician ( plane crash ) ( b. 1906 )

* August 2 – Enrico Caruso, Italian tenor ( born 1873 )

* February 25 – Enrico Caruso, Italian tenor ( d. 1921 )

* May 25 – Enrico Berlinguer, Italian politician ( d. 1984 )

* October 30 – Enrico Caterino Davila, Italian historian ( d. 1631 )

* January 1 – Enrico Dandolo becomes Doge of Venice.

Enrico Berlinguer () ( 25 May 1922 – 11 June 1984 ) was an Italian politician ; he was national secretary of the Italian Communist Party ( Partito Comunista Italiano or PCI ) from 1972 until his death.