physics

Vitaly Efimov

Vitaly Efimov 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 Vitaly Efimov rather than just read about it. In short: Vitaly N. Efimov (Russian: Вита́лий Никола́евич Ефи́мов; born 1938) is a Soviet theoretical physicist.

Key takeaways

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

Reference excerpt

Vitaly N. Efimov (Russian: Вита́лий Никола́евич Ефи́мов; born 1938) is a Soviet theoretical physicist. He proposed the existence of a novel and exotic state of matter now dubbed the Efimov State as a researcher in A. F. Ioffe Physico-Technical Institute, USSR Academy of Sciences, Leningrad, USSR in his 1970 paper "Energy levels arising from resonant two-body forces in a three-body system". It was announced in 2006 that the existence of this state of matter had been confirmed. Formerly an affiliate professor of physics at the University of Washington, he is now a lecturer emeritus. In 2018, he has been selected as the winner of the Inaugural Fadeev Medal.

References

External links March 15, 2006: Atoms in new state of matter behave like Three Musketeers: All for one, one for all Archived 2020-12-14 at the Wayback Machine May 27, 2014: Physicists Prove Surprising Rule of Threes

Illustrations

Worked examples

Example 1 — a first encounter with Vitaly Efimov

Start with the simplest possible case. Write down what Vitaly Efimov 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 Vitaly Efimov 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 Vitaly Efimov 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 Vitaly Efimov

In research: Vitaly Efimov 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 Vitaly Efimov 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: Vitaly Efimov is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1938 births, Fellows of the American Physical Society, Living people, so understanding it makes those chapters shorter.
In everyday life: Look for Vitaly Efimov 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 Vitaly Efimov in 20 minutes

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

Frequently asked questions

What is Vitaly Efimov in simple terms?

Vitaly N. Efimov (Russian: Вита́лий Никола́евич Ефи́мов; born 1938) is a Soviet theoretical physicist.

Why does Vitaly Efimov 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 Vitaly Efimov?

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 Vitaly Efimov.