astronomy

Oh Se-jung

Oh Se-jung is a astronomy 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 Oh Se-jung rather than just read about it. In short: Oh Se-jung (Korean: 오세정; born February 17, 1954) is a South Korean politician and physicist. He has served as the director of the Korean Federation of Science and Technology Societies, the first president of the Institute for Basic Science, and the 27th president of Seoul National University.

Key takeaways

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

Reference excerpt

Oh Se-jung (Korean: 오세정; born February 17, 1954) is a South Korean politician and physicist. He has served as the director of the Korean Federation of Science and Technology Societies, the first president of the Institute for Basic Science, and the 27th president of Seoul National University.

Education Oh entered Kyunggi High School of Gangnam District in 1968 and graduated in 1971. He next graduated from Seoul National University in 1975 with a Bachelor of Physics. Moving to the U.S., he did a combined M.S. and Ph.D. in physics at Stanford University graduating in 1981.

Career Staying in California, Oh worked as a researcher at the Palo Alto Institute of Xerox until 1984, in which he returned to Korea to work as a professor at the Department of Physics and Astronomy in Seoul National University (SNU). He then worked as a research at the International Center for Theoretical Physics from 1987. During this time, he was a visiting researcher and professor at the University of Michigan and University of Tokyo, respectively. Returning to SNU, he was the head of the Planning Lab under the College of National Sciences. He later served as the director of the Multi-Systems Research Center for Excellence of the Ministry of Science and Technology with the last several years overlapping as the director and later vice chairman of the Korean Federation of Science and Technology Societies. His next position was as the founding president of the Institute for Basic Science. He left to pursue the president's office at SNU, where he scored highly in the policy evaluation before losing to Sung Nak-in, who became the 26th president of SNU. Oh worked in politics before again applying for and eventually getting the position at SNU as the 27th president He was inaugurated on February 8, 2019, while also becoming the 10th chairman of the (Seoul National University Foundation).

Awards 2003: Scientists Worth Emulating, Korea Science Foundation 1997: Korea Science Award 1994: Outstanding Paper, Korea Federation of Science and Technology Societies

Illustrations

Worked examples

Example 1 — a first encounter with Oh Se-jung

Start with the simplest possible case. Write down what Oh Se-jung claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Oh Se-jung 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 Oh Se-jung 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 Oh Se-jung

In research: Oh Se-jung appears in astronomy 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 Oh Se-jung 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: Oh Se-jung is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1954 births, Academic staff of Seoul National University, Korean politicians, so understanding it makes those chapters shorter.
In everyday life: Look for Oh Se-jung 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 Oh Se-jung in 20 minutes

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

Frequently asked questions

What is Oh Se-jung in simple terms?

Why does Oh Se-jung matter?

Because it connects several astronomy 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 Oh Se-jung?

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 Oh Se-jung.