physics

James S. Langer

James S. Langer 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 James S. Langer rather than just read about it. In short: James S. Langer is an American professor of physics at the University of California at Santa Barbara.

Key takeaways

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

Reference excerpt

James S. Langer is an American professor of physics at the University of California at Santa Barbara. Born in Pittsburgh, Pennsylvania, in 1934, Langer graduated from Taylor Allderdice High School in 1951. He attended Carnegie Institute of Technology and the University of Birmingham, earning a B.A. in physics from the former in 1955 and a Ph.D. in mathematical physics from the latter in 1958. A Marshall Scholar at Birmingham, his thesis advisor was Rudolf Peierls. After receiving his doctorate, he began his career in the physics department at the Carnegie Institute of Technology (which later became Carnegie Mellon University), where he would stay until 1982. He then joined UCSB's Institute for Theoretical Physics as professor. Between 1989 and 1995, he served as its director. According to his profile at UCSB, Langer's research focuses on theories of nonequilibrium phenomena, including the kinetics of phase transitions, pattern formation in crystal growth, the dynamics of earthquakes, and deformation and failure in noncrystalline solids. Langer served as president of the American Physical Society in 2000 and as vice president of the United States National Academy of Sciences from 2001 to 2005. He was the founding editor of the Annual Review of Condensed Matter Physics as of 2010. His awards include the APS's Oliver Buckley Prize in 1997.

References

Worked examples

Example 1 — a first encounter with James S. Langer

Start with the simplest possible case. Write down what James S. Langer 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 James S. Langer 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 James S. Langer 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 James S. Langer

In research: James S. Langer 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 James S. Langer 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: James S. Langer is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1934 births, 20th-century American physicists, 21st-century American physicists, so understanding it makes those chapters shorter.
In everyday life: Look for James S. Langer 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 James S. Langer in 20 minutes

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

Frequently asked questions

What is James S. Langer in simple terms?

James S. Langer is an American professor of physics at the University of California at Santa Barbara.

Why does James S. Langer 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 James S. Langer?

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 James S. Langer.