astronomy

V. S. Rajan

V. S. Rajan 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 V. S. Rajan rather than just read about it. In short: Venkatesan Sundarajan Rajan (1934 – 15 July 1983) was a Singaporean dermatologist and the medical superintendent of the Middle Road Hospital. He was especially known for his teaching, research, and public health organizational work in venereal disease, especially gonorrhea, as well as dermatology.

Key takeaways

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

Reference excerpt

Venkatesan Sundarajan Rajan (1934 – 15 July 1983) was a Singaporean dermatologist and the medical superintendent of the Middle Road Hospital. He was especially known for his teaching, research, and public health organizational work in venereal disease, especially gonorrhea, as well as dermatology.

Early life and education Rajan studied at the Faculty of Medicine, University of Malaya. He graduated from the university with a Bachelor of Medicine, Bachelor of Surgery.

Career From 1972 to 1983, Rajan served as the medical superintendent of the Middle Road Hospital. As the superintendent of the hospital, he was instrumental in the establishment of facilities and services for mycology, dermatopathology and immunodermatology, which advanced the field of dematology in Singapore. He was awarded the Pingat Pentadbiran Awam (Gold) in 1980. In 1982, he became an associate professor of dermatology and venereal diseases at the National University of Singapore. He also served as the chairman of the Dermatological Society of Singapore. From 1970 to 1983, he served on the management committee of the Singapore Indian Fine Arts Society. He was also a member of the Hindu Advisory Board and the Tamil Language Cultural Society. He served as the vice-president of the Indian Education Trust.

Personal life and death Rajan was married and had a son. He died of a viral infection on 15 July 1983. He was 49. Following his death, the Dr V. S. Rajan Memorial Scholarship Fund was established in his memory. On the first anniversary of his death, the Singapore Indian Fine Arts Society staged a musical recital in his memory. In 2023, the National Skin Centre named an auditorium after him.

References

External links PubMed search for VS Rajan

Worked examples

Example 1 — a first encounter with V. S. Rajan

Start with the simplest possible case. Write down what V. S. Rajan 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 V. S. Rajan 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 V. S. Rajan 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 V. S. Rajan

In research: V. S. Rajan 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 V. S. Rajan 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: V. S. Rajan is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1934 births, 1983 deaths, 20th-century Singaporean medical doctors, so understanding it makes those chapters shorter.
In everyday life: Look for V. S. Rajan 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 V. S. Rajan in 20 minutes

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

Frequently asked questions

What is V. S. Rajan in simple terms?

Why does V. S. Rajan 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 V. S. Rajan?

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 V. S. Rajan.