astronomy

Per Johannes Kolsaker

Per Johannes Kolsaker 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 Per Johannes Kolsaker rather than just read about it. In short: Per Johannes Kolsaker (30 September 1931 – 30 June 2010) was a Norwegian chemist. He was born in Narvik as a son of book printer Johannes Fridtjof Olsen (1898–1975) and Johanne Otelie Trondsen (1896–1988).

Key takeaways

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

Reference excerpt

Per Johannes Kolsaker (30 September 1931 – 30 June 2010) was a Norwegian chemist. He was born in Narvik as a son of book printer Johannes Fridtjof Olsen (1898–1975) and Johanne Otelie Trondsen (1896–1988). He, and his family, changed their last name to Kolsaker in 1945. He finished his secondary education in 1950, enrolled at the University of Oslo and graduated with the cand.real. degree in 1958. He also participated in the Independent Norwegian Brigade Group in Germany in 1952. He became a research assistant in chemistry at the University of Oslo, then a lecturer in 1966 and professor from 1992 to his retirement in 2001. In between he worked for the Norwegian Agency for Development Cooperation in Tanzania from 1982 to 1983, and as an organic chemistry professor at the University of Tromsø from 1983 to 1986. He was interested in sports, including bridge, chess, golf and orienteering, and chaired the orienteering club IL Tyrving for two periods. He died in June 2010.

References

Worked examples

Example 1 — a first encounter with Per Johannes Kolsaker

Start with the simplest possible case. Write down what Per Johannes Kolsaker 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 Per Johannes Kolsaker 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 Per Johannes Kolsaker 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 Per Johannes Kolsaker

In research: Per Johannes Kolsaker 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 Per Johannes Kolsaker 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: Per Johannes Kolsaker is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1931 births, 2010 deaths, Academic staff of the University of Oslo, so understanding it makes those chapters shorter.
In everyday life: Look for Per Johannes Kolsaker 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 Per Johannes Kolsaker in 20 minutes

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

Frequently asked questions

What is Per Johannes Kolsaker in simple terms?

Why does Per Johannes Kolsaker 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 Per Johannes Kolsaker?

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 Per Johannes Kolsaker.