Question: A Fermi resonance was explained by the creator of the world's first what?

Context paragraphs:
Janet Husband: Dame Janet Husband {'1': ", '2': ", '3': ", '4': "} is Emeritus Professor of Radiology at the Institute of Cancer Research.  She is one of the first women to train in radiology part-time.  she began research on the prototype of the world's first CT body scanner at Northwick Park Hospital.  She later was appointed to the Royal Marsden as a Research Fellow, focusing on cross-sectional cancer imaging.  She was appointed as consultant radiologist to the Royal Marsden in 1980 and Director of the CRUK Clinical Magnetic Resonance Research Group at the Institute of Cancer Research CR in 1986.  She was appointed Medical Director of the Royal Marsden (2003-2006) and elected President of the Royal College of Radiologists (2004-2007) and Vice Chair of the Academy of Royal Colleges (2005-2007).

Shadow (Babylon 5): The Shadows are a fictional alien species in the science fiction television series "Babylon 5".  Their homeworld is Z'ha'dum, although whether it is the world they originated from is uncertain, and they were the second race among the First Ones to be discovered and nurtured by Lorien, the "First One".  In contrast to the Vorlons, whose philosophy is represented by the question "Who are you?" , that of the Shadows is represented by the question "What do you want?" , centering towards desire rather than identity.  J. Michael Straczynski, the show's creator, once explained that he chose the name "Shadows" because of its meaning in Analytical psychology.

List of references to the Matterhorn: The Matterhorn is an iconic landmark of Zermatt, Breuil-Cervinia and Valais and one of the natural symbols of Switzerland and Europe, its regular and pyramidal shape making it among the most recognisable mountains in the world.  Its steep faces and the fear it inspired in mountain climbers of the 19th century made it one of the last great Alpine peaks to be climbed.  The first successful but deadly ascent had a large resonance in the media of the times, giving the Matterhorn the reputation of a dangerous and inaccessible mountain.  The Matterhorn has then become a reference to artists, illustrators and designers.

Fermi resonance: A Fermi resonance is the shifting of the energies and intensities of absorption bands in an infrared or Raman spectrum.  It is a consequence of quantum mechanical mixing.  The phenomenon was explained by the Italian physicist Enrico Fermi.

Chicago Pile-1: Chicago Pile-1 (CP-1), was the world's first artificial nuclear reactor.  Its construction was part of the Manhattan Project, the Allied effort to create atomic bombs during World War II.  It was built by the Manhattan Project's Metallurgical Laboratory at the University of Chicago, under the west viewing stands of the original Stagg Field.  The first human-made self-sustaining nuclear chain reaction was initiated in CP-1 on 2 December 1942, under the supervision of Enrico Fermi, who described the apparatus as "a crude pile of black bricks and wooden timbers".

Enrico Fermi: Enrico Fermi ( ; ] ; 29 September 1901 – 28 November 1954) was an Italian physicist and the creator of the world's first nuclear reactor, the Chicago Pile-1.  He has been called the "architect of the nuclear age" and the "architect of the atomic bomb".  He was one of the very few physicists in history to excel both theoretically and experimentally.  Fermi held several patents related to the use of nuclear power, and was awarded the 1938 Nobel Prize in Physics for his work on induced radioactivity by neutron bombardment and the discovery of transuranic elements.  He made significant contributions to the development of quantum theory, nuclear and particle physics, and statistical mechanics.

Moscow Art Theatre production of The Seagull: The Moscow Art Theatre (MAT) production of "The Seagull" in 1898, directed by Konstantin Stanislavski and Vladimir Nemirovich-Danchenko, was a crucial milestone for the fledgling theatre company that has been described as "one of the greatest events in the history of Russian theatre and one of the greatest new developments in the history of world drama."  It was the first production in Moscow of Anton Chekhov's "The Seagull", though the play had been performed with only moderate success in St. Petersburg two years earlier.  Nemirovich, who was a friend of Chekhov's, overcame the writer's refusal to allow the play to appear in Moscow after its earlier lacklustre reception and convinced Stanislavski to direct the play for their innovative and newly founded Moscow Art Theatre (MAT).  The production opened on 29 December [O.S. 17 December] 1898 .  The MAT's success was due to the fidelity of its delicate representation of everyday life, its intimate, ensemble playing, and the resonance of its mood of despondent uncertainty with the psychological disposition of the Russian intelligentsia of the time.  To commemorate this historic production, which gave the MAT its sense of identity, the company to this day bears the seagull as its emblem.

Herbert L. Anderson: Herbert Lawrence Anderson (May 24, 1914 – July 16, 1988) was an American nuclear physicist who contributed to the Manhattan Project.  He was also a member of the team which made the first demonstration of nuclear fission in the United States, in the basement of Pupin Hall at Columbia University.  He participated in the first atomic bomb test, codenamed Trinity.  After the close of World War II, he was a professor of physics at the University of Chicago until 1982.  There, he helped Fermi establish the Enrico Fermi Institute and was its director from 1958 to 1962.  The latter part of his career was as a senior fellow at Los Alamos National Laboratory.  He was a recipient of the Enrico Fermi Award.  Anderson's lineage to Rabbi Meir Katzenellenbogen, the Maharam of Padua, is detailed in "The Unbroken Chain".

Rainbow Serpent: The Rainbow Serpent or "Rainbow Snake" is a common deity, often a creator god, in the mythology and a common motif in the art of Aboriginal Australia.  It is named for the obvious identification between the shape of a rainbow and the shape of a snake.  Some scholars believe that the link between snake and rainbow suggests the cycle of the seasons and the importance of water in human life.  When the rainbow is seen in the sky, it is said to be the Rainbow Serpent moving from one waterhole to another, and the divine concept explained why some waterholes never dried up when drought struck.  There are innumerable names and stories associated with the serpent, all of which communicate the significance and power of this being within Aboriginal traditions.  It is viewed as a giver of life, through its association with water, but can be a destructive force if angry.  The Rainbow Serpent is one of the most common and well known Aboriginal stories, very important to their society.  The Rainbow Serpent is one of the oldest continuing religious beliefs in the world and continues to be a cultural influence today.

PSR J1311–3430: PSR J1311–3430 is a pulsar with a spin period of 2.5 milliseconds.  It is the first millisecond pulsar found via gamma-ray pulsations.  The source was originally identified by the Energetic Gamma Ray Experiment Telescope as a bright gamma ray source, but was not recognized as a pulsar until observations with the Fermi Gamma-ray Space Telescope discovered pulsed gamma ray emission.  The pulsar has a helium-dominated companion much less massive than itself, and the two are in an orbit with a period of 93.8 minutes.  The system is explained by a model where mass from the low mass companion was transferred on to the pulsar, increasing the mass of the pulsar and decreasing its period.  These systems are known as Black Widow Pulsars, named after the original such system discovered, PSR B1957+20, and may eventually lead to the companion being completely vaporized.  Among systems like these, the orbital period of PSR J1311–3430 is the shortest ever found.  Spectroscopic observations of the companion suggest that the mass of the pulsar is 2.7 formula_1 (solar masses).  Though there is considerable uncertainty in this estimate, the minimum mass for the pulsar that the authors find adequately fits the data is 2.15 formula_1, which is still more massive than PSR J1614–2230, the previous record holder for most massive known pulsar.

Supporting paragraphs: Fermi resonance Enrico Fermi
Answer: nuclear reactor