astronomy

Vidar Christiansen

Vidar Christiansen 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 Vidar Christiansen rather than just read about it. In short: Vidar Christiansen (born 12 June 1948) is a Norwegian economist. He was born in Drammen and grew up in Hokksund.

Key takeaways

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

Reference excerpt

Vidar Christiansen (born 12 June 1948) is a Norwegian economist. He was born in Drammen and grew up in Hokksund. After graduating with the cand.oecon. degree he was a research fellow at the University of Oslo from 1975, lecturer at the Norwegian School of Economics from 1979 and at the University of Oslo from 1981. He took his dr. oecon. degree at the Norwegian School of Economics in 1987. In 1989 he was awarded the David Davidsson Prize for best article in the Scandinavian Journal of Economics. In 1991 he was hired as professor at the BI Norwegian Business School and from 1994 to his retirement he was a professor at the University of Oslo. He is a member of the Norwegian Academy of Science and Letters and the Royal Norwegian Society of Sciences and Letters. He is also a fellow of the European Economic Association.

References

Worked examples

Example 1 — a first encounter with Vidar Christiansen

Start with the simplest possible case. Write down what Vidar Christiansen 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 Vidar Christiansen 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 Vidar Christiansen 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 Vidar Christiansen

In research: Vidar Christiansen 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 Vidar Christiansen 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: Vidar Christiansen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1948 births, Academic staff of BI Norwegian Business School, Academic staff of the Norwegian School of Economics, so understanding it makes those chapters shorter.
In everyday life: Look for Vidar Christiansen 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Vidar Christiansen” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Vidar Christiansen in 20 minutes

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

Frequently asked questions

What is Vidar Christiansen in simple terms?

Vidar Christiansen (born 12 June 1948) is a Norwegian economist. He was born in Drammen and grew up in Hokksund.

Why does Vidar Christiansen 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 Vidar Christiansen?

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 Vidar Christiansen.