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Manhattan Project

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The Manhattan Project was a secret U.S. government research initiative during World War II, aimed at developing atomic weapons. It involved collaboration among scientists, military personnel, and government officials, leading to the creation of the first nuclear bombs, which were ultimately used in the bombings of Hiroshima and Nagasaki in 1945.
lightbulbAbout this topic
The Manhattan Project was a secret U.S. government research initiative during World War II, aimed at developing atomic weapons. It involved collaboration among scientists, military personnel, and government officials, leading to the creation of the first nuclear bombs, which were ultimately used in the bombings of Hiroshima and Nagasaki in 1945.

Key research themes

1. How did the technical challenges and experimental findings shape the development of the Manhattan Project's nuclear weapons?

This research area focuses on the specific criticality experiments, reactor designs, and material properties that underpinned the success of the Manhattan Project. Understanding the experimental procedures, measurements, and theoretical frameworks applied provides insights into how the atomic bomb's construction became technically feasible. It highlights the interplay between experimental nuclear physics, engineering constraints, and iterative design during WWII, crucial for historians and scientists studying early nuclear technology development.

Key finding: This paper details the first large-scale criticality experiments with pure fissile materials uranium-235 and plutonium-239, performed during 1944-1945. Utilizing spherical and hydride configurations, these tests established... Read more
Key finding: The work outlines the origins and major technological developments, including the establishment of the Los Alamos Laboratory where bomb design was centralized. It emphasizes the coordinated scientific, engineering, and... Read more
Key finding: This study uncovers the complex patenting and classification system underlying Manhattan Project innovations. It details that many critical patents, including those by Enrico Fermi on nuclear reactors, were held classified... Read more

2. What were the social, ethical, and political dimensions faced by scientists and policymakers involved in the Manhattan Project?

This theme interrogates the moral dilemmas, interpersonal dynamics, and governmental pressures experienced by key figures in the Manhattan Project. It explores ethical debates about weapon use, political espionage concerns, and the psychological impacts of nuclear weapons development on individuals and societies. These socio-political insights are essential to comprehend the human context beyond pure technical achievement, shaping subsequent nuclear policy and scientific responsibility discourses.

Key finding: Focusing on J. Robert Oppenheimer's complex legacy, the paper presents the ethical conflicts faced by Manhattan Project scientists as they developed and advised on atomic bomb use. It reveals Oppenheimer’s conflicted stance... Read more
Key finding: This historical investigation uncovers the covert intelligence and deception efforts linked to the WWII era, including espionage relationships involving Manhattan Project associates. It explores the role of double agents,... Read more
Key finding: Analyzing postwar nuclear engineering education shaped by the Manhattan Project legacy, this paper investigates how training reactors and educational programs formed a new professional identity embedded in Cold War state... Read more

3. How has the cultural, artistic, and historical memory of the Manhattan Project and nuclear weapons been constructed and contested?

This theme surveys the multifaceted legacies of the Manhattan Project as expressed through art, historiography, public memory, and narrative framing. It examines how nuclear trauma, environmental impact, and ethical questions are represented culturally and politically. Understanding these contested memories provides insight into the ongoing dialogue about nuclear history’s meaning, the politics of remembrance, and the shaping of nuclear identity in public consciousness.

Key finding: This essay analyzes artist Yukiyo Kawano’s sculptural representations of the Nagasaki atomic bombing, situating the work within layers of ritual symbolism and contested memory at the Hanford nuclear production site. By... Read more
Key finding: This cultural study explores the symbolic and literal role of the New Mexico desert as the testing ground for the first atomic bomb (Trinity test) and its mythologized status. It draws on philosophical reflections about the... Read more
Key finding: This critical historiographical work challenges dominant American narratives of the Hiroshima bombing which focus on scientific achievements and governmental agency while erasing Japanese victimhood and the scale of civilian... Read more

All papers in Manhattan Project

The German article is about survival of nuclear war today, by using experiences of Leo Szilard. Arne Molfenter wrote a German book about "Léo Szilárd -Der Mann hinter der Bombe". Philipp Sonntag looks at current problems of avoiding... more
In the summer of 1939, Dietrich, Karl-Friedrich, and Werner Heisenberg visited the USA. The brothers sailed a few weeks apart on the SS Bremen, the same ship that Karl-Friedrich had taken ten years before in 1929 on his triumphal trip to... more
Title of Thesis: The Manhattan Project Legacy: Low Level Radioactive Waste Health Effects: An Epidemiological Study Lisa Fetterman Voyce, Master of Science, 1984 Thesis Directed by: G. Reza Najem, M.D., Ph.D. Dept. of Preventive Medicine... more
Ernest Cune - key liaison player and the spy business from 1940 into 1950s, is the primary focus. This is about Ernest Cuneo-what today might be called a middle man and "fixer" in relations between several US agencies, the British MI6... more
Se presenta aquí una amplia reflexión sobre el caso de Ettore Majorana y Rolando Pelizza: el primero, físico teórico desaparecido en 1938; el segundo, inventor de un aparato capaz de transformaciones prodigiosas de la materia. Este... more
The NSLS-II is a state-of-the-art 3 GeV synchrotron light source under construction at Brookhaven National Laboratory. Since 2012, the injector system gradually moves to the commissioning stage. To make the commissioning smooth and... more
Review of The Man who came from the circus: The Secret Life of Cyril Bertram Mills by Christopher Andrew
This is my syllabus for Nuclear Security and Catholic Social Teaching, an online course that I taught in the spring semester of 2025.

LUC IPS 599-01 S25 Nuclear Security and CST ONLINE
Central in this paper is a puzzling innovation project involving the introduction of a new machine in an assembly plant in the aviation industry. The project drew our attention because it achieved remarkably high performance results... more
The Super-bomb issue contained two problems: feasibility of physical engineering and political need to get H-bomb ASAP. And there were two radically different assessments of these problems by outstanding physicists Hans Bethe and Edward... more
Criticality experiments with 235 U (metal and hydride) and 239 Pu (metal) were performed during the Manhattan Project. Results from these experiments provided necessary information for the success of the Manhattan Project. These... more
The mind, life, family life, identity, guilt, I am death, quantum physics, Sanskrit reader and the head of the two atomic bombs in Los Alamos under code Name The Manhattan Project. The complexity about Doctor Robert Oppenneheimr is richer... more
Compt. Rend. Comptes-rendus de l'Académie des Sciences (France) CPC ou CPM Combined Policy Committee ou Comité Politique Mixte (USA-GB-Canada) Les acteurs principaux France Chercheurs Haut-fonctionnaires-Diplomates-Hommes politiques Adler... more
Review of Anany Bhattacharya, L’uomo venuto dal futuro. La vita visionaria di John von Neumann, Adelphi, Milano 2024
Compt. Rend. Comptes-rendus de l'Académie des Sciences (France) CPC ou CPM Combined Policy Committee ou Comité Politique Mixte (USA-GB-Canada) Les acteurs principaux France Chercheurs Haut-fonctionnaires-Diplomates-Hommes politiques Adler... more
Inspired by the publication of a book celebrating the role of the women in the Manhattan Project, this paper seeks to demonstrate that such an effort-to the extent it accepts and endorses the historical, political and scientific... more
The 35-MeV Compact Energy Recovery Linac (cERL) is a superconducting test accelerator for the future 3-GeV ERL project (PEARL) at KEK. During the past year, we have finished key devices such as a 500-kV DC photocathode electron gun and... more
As an amendment to a CRADA (Cooperative Research and Development Agreement) between Forschungszentrum Dresden (FZD) and JLab we have fabricated and tested after appropriate surface treatment a 1.6 cell, 1300 MHz RRR niobium photo-injector... more
A review of "The Maniac", by Benjamin Labatut, focusing on the religious dimension in the story. The Maniac is an exploration of the convoluted and often unsettling relationship between scientific genius and the darker dimensions of the... more
Few projects have had such a profound and lasting effect on the world as the Manhattan Project. Today, after it was approved 70 years ago by President Franklin D. Roosevelt, its legacy is felt in nuclear medicine, military defence,... more
Text of the presentation given for the Semi-Plenary on ‘The Technopolitics of New Normal’  at the EISA Annual Conference 2023 (Potsdam, September 2023)
This chapter illustrates the management of uncertainty, of stakeholders, and of contractors, and then draws on history—the Manhattan Project to develop the atomic bomb, and Cold War-era space and defense projects such as Polaris and... more
TWO SIDES OF SCIENTIST GEORGE KISTIAKOWSKY The article is devoted to the analysis of problems related to the responsibility of scientists for the results of their activities. The development of science and using its results in practical... more
Viene qui esposta un’ampia riflessione sul caso di Majorana e Pelizza: il primo, noto fisico scomparso nel 1938; il secondo, inventore di un congegno capace di trasformazioni della materia prodigiose. Questo breve saggio non intende... more
The Berlin Energy Recovery Linac Project bERLinPro [1] is to be constructed at the Helmholtz Zentrum in Berlin. The aim of the project is to expand the required accelerator physics and technology knowledge mandatory for the generation of... more
When future generations look back on the 20 th century, few events will rival the harnessing of nuclear energy as a turning point in world history, science and society. Yet, the Department of Energy has not always embraced its Manhattan... more
All’inizio degli anni Novanta dello scorso secolo, mentre frugava in una vecchia scatola piena di foto di famiglia, la giovane fotografa Rachel Fermi ne trovò una che la fece trasalire. Si trattava di una piccola immagine sbiadita –... more
As Allied scientists established the feasibility of an atomic bomb, Germany's leading theorist came to a mistaken conclusion Jonothan Logan Not far into the 200-odd pages of the recently declassified Farm Hall transcripts comes the... more
Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the data needed, and... more
Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the data needed, and... more
The Manhattan Project, an ambitious and secretive scientific project of the twentieth century, has a prominent place in the history of science and warfare. This paper provides a detailed historical perspective on the Manhattan Project's... more
Was Oppenheimer a war criminal? In a moment of contrition, Oppenheimer bemoaned the blood on his hands to Truman. For his part, Truman later noted, “he hasn’t half as much blood on his hands as I have.” Of course, Truman was the true war... more
The archival record makes clear that killing large numbers of civilians was the primary purpose of the atomic bombing of Hiroshima; destruction of military targets and war industry was a secondary goal and one that "legitimized" the... more
The photographs of Ed Westcott, a civilian hired to document the Manhattan Project at Oak Ridge, Tennessee, are a valuable educational resource for school children as well as scholars. During the war years, Westcott was the official... more
book on the Cambodian relief operation is a record of events since 1979. The authors quote from the Ramayana, "When I don't know who I am, I serve you. When I know who I am, I am you." Only 4% of the refugees were under 12 years of age... more
The first major government-sponsored science in America was very early in the new country's history-the Lewis & Clark expedition, the Corps of Discovery, up the Missouri River and out to the West Coast. It was the brain child of Thomas... more
Office (Field Office) proposes to assess, stabilize, and eventually restore a Manhattan Project-era guard shack to its original wartime condition. TA-8-172, a portable building, is a Manhattan Project National Historical Park property... more
Inspired by the publication of a book celebrating the role of the women in the Manhattan Project, this paper seeks to demonstrate that such an effort-to the extent it accepts and endorses the historical, political and scientific... more
Debendra Mohan Bose was one of the leading experimental physicists of India in the 20th century. He did notable work with Wilson cloud chambers, successfully photographing the recoil tracks of radioactive nuclei during the process of... more
The fifth Issue of the Close Encounters in War Journal addresses the topic “Science, Technology, and Close Encounters in War”. The interconnection among these three fields of human experience has always been strong and controversially... more
Eng. version of my Translator's Preface to the Turkish edition of John L. Modern's "Neuromatic, or a Particular History of Religion and the Brain" (Chicago UP, 2021). Forthcoming from Say Press, Jan. 2023.
Mikroçip, Megabit, Beşer—Nöromatik kuşatma altında bilginin soykütüğü ve içkin eleştirinin imkânı. Translator's Preface to the Turkish edition of "Neuromatic, or A Particular History of Religion and the Brain," by John Lardas Modern... more
Current physics textbooks tend to exclude military applications, but it is explained here how a study of the Manhattan project-the devastatingly successful attempt to develop an atomic bomb-can show students how the lives and work of... more
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