physics

Lu Jeu Sham

Lu Jeu Sham 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 Lu Jeu Sham rather than just read about it. In short: Lu Jeu Sham (Chinese: 沈呂九) (born April 28, 1938) is an American physicist. He is best known for his work with Walter Kohn on the Kohn–Sham equations.

Key takeaways

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

Reference excerpt

Lu Jeu Sham (Chinese: 沈呂九) (born April 28, 1938) is an American physicist. He is best known for his work with Walter Kohn on the Kohn–Sham equations.

Biography Lu Jeu Sham's family was from Fuzhou, Fujian, but he was born in British Hong Kong on April 28, 1938. He was graduated from the Pui Ching Middle School in 1955 and then traveled to England for his higher education. He received his Bachelor of Science in mathematics (1st class honours) from Imperial College, University of London in 1960 and his PhD in physics from the University of Cambridge in 1963. In 1963–1966, he worked with Prof. W. Kohn as a postdoctoral fellow at the University of California, San Diego. From 1966 to 1967, Sham worked in University of California, Irvine as assistant professor in Physics and from 1967 to 1968 in Queen Mary College, University of London as a Reader. He joined the faculty of University of California in 1968. Sham was a professor in the Department of Physics at University of California, San Diego, eventually serving as department head. He is now a UCSD professor emeritus. Sham was elected to the National Academy of Sciences in 1998.

Scientific contributions Sham is noted for his work on density functional theory (DFT) with Walter Kohn, which resulted in the Kohn–Sham equations of DFT. The Kohn–Sham method is widely used in materials science. Kohn received a Nobel Prize in Chemistry in 1998 for the Kohn–Sham equations and other work related to DFT. Sham's other research interests include condensed matter physics and optical control of electron spins in semiconductor nanostructures for quantum information processing.

Honors and awards Member of the US National Academy of Sciences (1998) Member of Academia Sinica (1998) Fellow of American Association for the Advancement of Science (2011) Fellow of American Physics Society (1977) Fellow of Optica (formerly OSA) (2009) The Willis E. Lamb Award for Laser Science and Quantum Optics (2004) The MRS Materials Theory Award (2019) Humboldt Foundation Award (1978) Guggenheim Fellowship (1983)

References

External links Interview of Lu Sham by David Zierler on October 22, 2020, Niels Bohr Library & Archives, American Institute of Physics, College Park, MD USA

Worked examples

Example 1 — a first encounter with Lu Jeu Sham

Start with the simplest possible case. Write down what Lu Jeu Sham 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 Lu Jeu Sham 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 Lu Jeu Sham 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 Lu Jeu Sham

In research: Lu Jeu Sham 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 Lu Jeu Sham 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: Lu Jeu Sham is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1938 births, Alumni of Imperial College London, Alumni of the University of Cambridge, so understanding it makes those chapters shorter.
In everyday life: Look for Lu Jeu Sham 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 Lu Jeu Sham in 20 minutes

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

Frequently asked questions

What is Lu Jeu Sham in simple terms?

Lu Jeu Sham (Chinese: 沈呂九) (born April 28, 1938) is an American physicist. He is best known for his work with Walter Kohn on the Kohn–Sham equations.

Why does Lu Jeu Sham 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 Lu Jeu Sham?

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 Lu Jeu Sham.