physics

Suitcase nuclear device

Suitcase nuclear device 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 Suitcase nuclear device rather than just read about it. In short: A suitcase nuclear device (also suitcase nuke, suitcase bomb, backpack nuke, snuke, mini-nuke, and pocket nuke) is a tactical nuclear weapon that is portable enough that it could use a suitcase as its delivery method. During the 1950s and 1960s both the United States and the Soviet Union developed nuclear weapons small enough to be portable in specially designed backpacks.

Key takeaways

Suitcase nuclear device belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Suitcase nuclear device to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Suitcase nuclear device from memory before moving on to harder problems.

Reference excerpt

A suitcase nuclear device (also suitcase nuke, suitcase bomb, backpack nuke, snuke, mini-nuke, and pocket nuke) is a tactical nuclear weapon that is portable enough that it could use a suitcase as its delivery method. During the 1950s and 1960s both the United States and the Soviet Union developed nuclear weapons small enough to be portable in specially designed backpacks. Neither the United States nor the Soviet Union have ever made public the existence or development of weapons small enough to fit into a normal-sized suitcase or briefcase. The W48 however, does fit the criteria of small, easily disguised, and portable. Its explosive yield was extremely small for a nuclear weapon. In the mid-1970s, debate shifted from the possibility of developing such a device for the military to concerns over its possible use in nuclear terrorism. The concept became a staple of the spy thriller genre in the later Cold War era.

Etymology The term "suitcase (nuclear/atomic) bomb" was introduced during the 1950s with the prospect of reducing the size of the smallest tactical nuclear weapons even further, albeit purely as a "figure of speech" for miniaturization, not necessarily for the delivery in actual suitcases.

Overview The value of portable nuclear weapons lies in their ability to be easily smuggled across borders, transported by means widely available, and placed close to targets of strategic value, or as means to render enemy land uninhabitable. In nuclear weapon design, there is a trade-off in small weapons designs between weight and compact size. Extremely small (as small as 5 inches (13 cm) diameter and 24.4 inches (62 cm) long) linear implosion type weapons, which might conceivably fit in a large briefcase or typical suitcase, have been tested, but the lightest of those weighed nearly 100 pounds (45 kg) and had a maximum yield of only 0.19 kiloton (the Swift nuclear device, tested in Operation Redwing's Yuma test on May 27, 1956). The largest yield of a relatively compact linear implosion device was under 2 kilotons for the cancelled (or never deployed but apparently tested) US W82-1 artillery shell design, with yield under 2 kilotons for a 95-pound (43 kg) artillery shell 6.1 inches (15 cm) in diameter and 34 inches (86 cm) long.

Soviet Union and Russia

… excerpt ends here. Continue reading the full article.

Illustrations

Suitcase nuclear device: H-912 transport container for Mk-54 SADM — H-912 transport container for Mk-54 SADM

Worked examples

Example 1 — a first encounter with Suitcase nuclear device

Start with the simplest possible case. Write down what Suitcase nuclear device 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 Suitcase nuclear device 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 Suitcase nuclear device 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 Suitcase nuclear device

In research: Suitcase nuclear device 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 Suitcase nuclear device 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: Suitcase nuclear device is common in secondary-school and first-year university syllabi. It links to neighbouring topics Nuclear terrorism, Tactical nuclear weapons, Terrorism tactics, so understanding it makes those chapters shorter.
In everyday life: Look for Suitcase nuclear device 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 Suitcase nuclear device in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Suitcase nuclear device means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Suitcase nuclear device out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Suitcase nuclear device in simple terms?

Why does Suitcase nuclear device 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 Suitcase nuclear device?

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 Suitcase nuclear device.