astronomy

Olaf Østensen

Olaf Østensen 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 Olaf Østensen rather than just read about it. In short: Olaf Magnus Østensen (born 1950) is a Norwegian civil servant. He works in the Norwegian Mapping and Cadastre Authority, where he is deputy director for NGIS. Østensen is a trained mathematician and graduated in 1977 graduate of the University of Oslo. Østensen is particularly known for his work with the organization and accessibility of map information and have made a particular effort establishment of standards fo…

Key takeaways

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

Reference excerpt

Olaf Magnus Østensen (born 1950) is a Norwegian civil servant. He works in the Norwegian Mapping and Cadastre Authority, where he is deputy director for NGIS. Østensen is a trained mathematician and graduated in 1977 graduate of the University of Oslo. Østensen is particularly known for his work with the organization and accessibility of map information and have made a particular effort establishment of standards for online information. Internationally, he is head of the Technical Committee 211 of the International Organization for Standardization, which has the task to work out international standards for geographic information. Østensen has also been head of the Norwegian Standards Council, which has proposed standards that apply to audio and video content on public sites. The Royal Norwegian Court announced on 17 November 2009 that the King had appointed Østensen as a Knight First Class of the Order of St. Olav for socially beneficial work. It was further informed that the decision to award him was based on "[..] Østensens pioneering work related to national standardization work and the development of access to public information."

References

Worked examples

Example 1 — a first encounter with Olaf Østensen

Start with the simplest possible case. Write down what Olaf Østensen 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 Olaf Østensen 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 Olaf Østensen 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 Olaf Østensen

In research: Olaf Østensen 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 Olaf Østensen 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: Olaf Østensen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1950 births, Geographic data and information professionals, Living people, so understanding it makes those chapters shorter.
In everyday life: Look for Olaf Østensen 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 Olaf Østensen in 20 minutes

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

Frequently asked questions

What is Olaf Østensen in simple terms?

Why does Olaf Østensen 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 Olaf Østensen?

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 Olaf Østensen.