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One World or None

One World or None is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand One World or None rather than just read about it. In short: One World or None (1946) is an instructional documentary short film produced by the National Committee on Atomic Information in conjunction with Philip Ragan Productions. Made just months after the Atomic bombings of Hiroshima and Nagasaki, it is considered the first postwar "atomic scare" film.

One World or None — main illustration
One World or None — illustration

Key takeaways

  • One World or None belongs to physics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect One World or None to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of One World or None from memory before moving on to harder problems.

Reference excerpt

One World or None (1946) is an instructional documentary short film produced by the National Committee on Atomic Information in conjunction with Philip Ragan Productions. Made just months after the Atomic bombings of Hiroshima and Nagasaki, it is considered the first postwar "atomic scare" film.

Synopsis One World or None established that throughout history, scientists from many nations have made great advances and discoveries and have shared that knowledge globally. The periodic table was developed by Russian chemist Dmitri Mendeleev, British scientist J. J. Thomson and his team discovered the principle of the electron, and German theorist Albert Einstein came up with the theory of relativity. Nuclear physics was a product of New Zealand physicist Ernest Rutherford's work on the atomic nucleus, Danish physicist Niels Bohr's identification of atomic structure and American physicist Carl David Anderson's discovery of the positron. Other advances included English physicist James Chadwick discovering the neutron, while French scientists Irène Joliot-Curie and her husband Frédéric Joliot-Curie studied artificial radioactivity. Further nuclear research was carried out by Enrico Fermi, who transmuted uranium based on Japanese physicist Hantaro Nagaoka's theories on the atom. German scientist Otto Hahn derived barium from uranium, while uranium was split by Austrian-Swedish physicist Lise Meitner. Knowledge about atomic energy was shared by all. The question remains, will the people of the earth use this powerful energy to benefit humanity? The first outward manifestation is the atom bomb that was dropped on Hiroshima. Images of the city after the attack are startling. Imagining the destruction inflicted in seconds on an American city. A metropolis such as New York City, Chicago or San Francisco would have its downtown core devastated by blast effects and radioactivity. According to information provided by the Federation of American Scientists, the massive destructive power of the atom bomb is contrasted with earlier weapons of war. A Roman soldier's lance would only kill one enemy, Napoleon's cannon perhaps a dozen, the "Big Bertha" cannon could kill up to 88, and the V-2 killed as many of 168 individuals on average, but the first atom bomb killed more than 100,000 at Hiroshima. The atom bomb was delivered by aircraft which had a limited range, but new bombers have an intercontinental range. Imagine the frightening prospect if Japan and Germany had had the atom bomb during the war. Attacks by the Axis powers could have brought World War II to an end, as there would have been no defense against a V-2 rocket carrying an atom bomb. Even with the short range of the rocket, all of England could have been attacked from bases in France. While only in the blueprint stage, advanced rockets capable of crossing the Atlantic could have destroyed the U.S. Eastern seaboard cities. U-boats armed with atom bombs delivered by rockets could have threatened more of North America. Fifth column sabotage using atom bombs could devastate any U.S. center. The answer to atomic warfare is to have the nations of the world unite under the United Nations framework, abolish war and put Nuclear weapons and other weapons of mass destruction under international control, as well as establish criminal responsibility for aggression (anticipating the International Criminal Court). Representatives of the peoples of the world are confronted with a choice: unite as one world or face destruction.

History

Federation of Atomic Scientists The Federation of Atomic Scientists (FAS) was founded in November 1945 by Manhattan Project scientists who helped construct the first atom bombs. Their credo was that all scientists, engineers, and other "technically-trained thinkers" have an ethical obligation to ensure the technological "fruits of their intellect and labor" are applied to the benefit of humanity.

One World or None (book) In early 1946, rebranded as the Federation of American Scientists (FAS), the organization took efforts to broaden and diversify its network of supporters to include all who want to reduce nuclear dangers and ultimately prevent global catastrophe. In 1946, just months after atom bombs were dropped on Hiroshima and Nagasaki, the scientists who had developed nuclear technology came together to express their concerns and thoughts about the nuclear age they had unleashed through the release of a book, One World or None. The anthology of essays included contributions from Niels Bohr, Albert Einstein, and Robert Oppenheimer, among others. The book stresses the triumph of offence over defense. Chapter 7 by radar expert Louis N. Ridenour is titled “There is no defense.” He says: “Modern weapons, in particular atomic bomb, have led to a considerable advantage in the means of offense… over those of defense.” It was before the introduction of ICBM, SLBM and MIRV which further magnified offence over defense. Though remaining on the level of operational strategy, the official declaratory policy invested much efforts to cover this reality from the public by means of MAD and Deterrence theories. One World or None was critically reviewed in the New York Herald Tribune Book Review, March 17, 1946: "An illuminating, powerful, threatening and hopeful statement which will clarify a lot of confused thinking about atomic energy.” The original edition sold 100,000 copies. Quickly rising to the top of The New York Times bestsellers' list, the book spawned the short film of the same name.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with One World or None

Start with the simplest possible case. Write down what One World or None claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to One World or None before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about One World or None ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of One World or None

In research
One World or None appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses One World or None in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
One World or None is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1946 American animated short films, 1946 films, American animated black-and-white films, so understanding it makes those chapters shorter.
In everyday life
Look for One World or None outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study One World or None in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what One World or None means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain One World or None out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is One World or None in simple terms?

One World or None (1946) is an instructional documentary short film produced by the National Committee on Atomic Information in conjunction with Philip Ragan Productions. Made just months after the Atomic bombings of Hiroshima and Nagasaki, it is considered the first postwar "atomic scare" film.

Why does One World or None matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study One World or None?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on One World or None.

Tags

  • 1946 American animated short films
  • 1946 films
  • American animated black-and-white films
  • American social guidance and drug education films
  • Civil defense in the United States
  • Disaster preparedness in the United States
  • Films about nuclear war and weapons
  • Films scored by Louis Applebaum
  • Nuclear safety and security

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