physics

Nuclear button

Nuclear button 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 Nuclear button rather than just read about it. In short: The "nuclear button" is a figurative term referring to the power to use nuclear weapons. "Pushing the nuclear button" refers to actually using them. The actual procedure for using such weapons is more complex than simply pushing a button.

Key takeaways

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

Reference excerpt

The "nuclear button" is a figurative term referring to the power to use nuclear weapons. "Pushing the nuclear button" refers to actually using them. The actual procedure for using such weapons is more complex than simply pushing a button. The "nuclear button" may be transferred to another official due to political changes or the incapacitation of a person currently in control of it. Various nuclear countries have nuclear briefcases that accompany the leader (such as the president of the United States), allowing them to launch nuclear missiles at any time. Depictions of nuclear buttons sometimes appear in popular culture – for example, the music video for It's a Mistake in which an officer accidentally presses the nuclear button; and Land of Confusion, in which president Reagan launches a nuclear attack using the button.

North Korean announcement On January 1, 2018, Kim Jong Un announced during his New Year speech "the nuclear button is always on the desk of my office" in order to make the United States aware that he is able to attack the country at will. US President Trump responded via Twitter on the following day:

Diet Coke button

Trump has been reported to have used a red "Diet Coke button" as a signal for a butler to serve a glass of Diet Coke in the Oval Office. In his 2019 book Team of Vipers, Cliff Sims writes that Trump jokingly referred to it as a nuclear button in front of visitors: “Not sure what to do, guests would look at one another with raised eyebrows. Moments later, a steward would enter the room carrying a glass filled with Diet Coke on a silver platter, and Trump would burst out laughing.”

See also Nuclear briefcase, the non-figurative authorization mechanism for the nuclear weapons of various countries

References

Illustrations

Worked examples

Example 1 — a first encounter with Nuclear button

Start with the simplest possible case. Write down what Nuclear button 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 Nuclear button 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 Nuclear button 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 Nuclear button

In research: Nuclear button 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 Nuclear button 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: Nuclear button is common in secondary-school and first-year university syllabi. It links to neighbouring topics Nuclear command and control, Nuclear war and weapons in popular culture, so understanding it makes those chapters shorter.
In everyday life: Look for Nuclear button 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 Nuclear button in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Nuclear button 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 Nuclear button out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Nuclear button in simple terms?

Why does Nuclear button 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 Nuclear button?

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 Nuclear button.