physics

George Edward Backus

George Edward Backus 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 George Edward Backus rather than just read about it. In short: George Edward Backus (born May 24, 1930) is an American geophysicist, best known for his work with J. Freeman Gilbert on inverse methods for geophysical data.

Key takeaways

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

Reference excerpt

George Edward Backus (born May 24, 1930) is an American geophysicist, best known for his work with J. Freeman Gilbert on inverse methods for geophysical data. He is also notably credited with advancing the dynamo theory on the origin of the Earth's magnetic field. Born in Chicago, Backus did his undergraduate and graduate training at the University of Chicago, receiving a M.S. in mathematics in 1950 and a Ph.D. in physics in 1956. During 1957–1958 he worked as a physicist in Project Matterhorn in Princeton, then moving to MIT for two years as assistant professor of mathematics. In 1960 he moved to Scripps Institution of Oceanography and the associated University of California, San Diego where he has spent the rest of his career. Backus was professor of geophysics until 1994, and subsequently a research professor of geophysics. His brother Milo was also a geophysicist. Backus is the winner of many awards, including the Gold Medal of the Royal Astronomical Society (1986) and the John Adam Fleming Medal of the American Geophysical Union (1986), and he was elected a fellow of the American Geophysical Union (1967) and of the John Simon Guggenheim Memorial Foundation (1963 and 1970). He is an elected member of the National Academy of Sciences, the American Academy of Arts and Sciences, and of the Académie des Sciences of France.

See also Backus–Gilbert method List of geophysicists

References

External links Scripps Institution of Oceanography – Profile page on George Backus Profile at Scripps Institution of Oceanography

Worked examples

Example 1 — a first encounter with George Edward Backus

Start with the simplest possible case. Write down what George Edward Backus 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 George Edward Backus 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 George Edward Backus 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 George Edward Backus

In research: George Edward Backus 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 George Edward Backus 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: George Edward Backus is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1930 births, American geophysicists, Fellows of the American Geophysical Union, so understanding it makes those chapters shorter.
In everyday life: Look for George Edward Backus 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 George Edward Backus in 20 minutes

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

Frequently asked questions

What is George Edward Backus in simple terms?

George Edward Backus (born May 24, 1930) is an American geophysicist, best known for his work with J. Freeman Gilbert on inverse methods for geophysical data.

Why does George Edward Backus 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 George Edward Backus?

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 George Edward Backus.