astronomy

Nan Rendong

Nan Rendong 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 Nan Rendong rather than just read about it. In short: Nan Rendong (simplified Chinese: 南仁东; traditional Chinese: 南仁東; pinyin: Nán Réndōng, 19 February 1945–15 September 2017) was a Chinese astronomer of Manchu descent. Nan Rendong was a researcher at National Astronomical Observatory of China, and he was the founder, Chief Scientist and the Chief Engineer of the Five hundred meter Aperture Spherical Telescope (FAST) in China.

Key takeaways

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

Reference excerpt

Nan Rendong (simplified Chinese: 南仁东; traditional Chinese: 南仁東; pinyin: Nán Réndōng, 19 February 1945–15 September 2017) was a Chinese astronomer of Manchu descent. Nan Rendong was a researcher at National Astronomical Observatory of China, and he was the founder, Chief Scientist and the Chief Engineer of the Five hundred meter Aperture Spherical Telescope (FAST) in China. He was an IAU member, where he was the Vice-President of Division X (Radio Astronomy) and Commission 40 (Radio Astronomy) from 2003 to 2006, and then the President of both the division and commission in 2006–2009. Nan Rendong died from lung cancer in Boston on 15 September 2017. He was 72 years old. Asteroid 79694 Nanrendong was named in his memory. The official naming citation was published by the Minor Planet Center on 25 September 2018 (M.P.C. 111800). He was granted the titles "Model of our Times" and "Reform Pioneer" for his contribution.

References

External links FAST: The World's Largest Telescope" on YouTube, includes an interview with Nan Rendong

Worked examples

Example 1 — a first encounter with Nan Rendong

Start with the simplest possible case. Write down what Nan Rendong 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 Nan Rendong 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 Nan Rendong 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 Nan Rendong

In research: Nan Rendong 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 Nan Rendong 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: Nan Rendong is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1945 births, 2017 deaths, 20th-century Chinese astronomers, so understanding it makes those chapters shorter.
In everyday life: Look for Nan Rendong 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 Nan Rendong in 20 minutes

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

Frequently asked questions

What is Nan Rendong in simple terms?

Why does Nan Rendong 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 Nan Rendong?

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 Nan Rendong.