astronomy

Karl Erik Zachariassen

Karl Erik Zachariassen 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 Karl Erik Zachariassen rather than just read about it. In short: Karl Erik Zachariassen (1942 – 11 December 2009) was a Norwegian entomologist. After taking his cand.real. degree at the University of Oslo with a thesis within zoophysiology, he studied further at the University of California, San Diego and took the dr.philos. degree in 1980.

Key takeaways

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

Reference excerpt

Karl Erik Zachariassen (1942 – 11 December 2009) was a Norwegian entomologist. After taking his cand.real. degree at the University of Oslo with a thesis within zoophysiology, he studied further at the University of California, San Diego and took the dr.philos. degree in 1980. His doctoral thesis was titled Mechanisms Involved in Tolerance to Freezing in Adult Beetles. He became professor at the Norwegian Institute of Technology in 1988, later the Norwegian University of Science and Technology. He furthermore chaired the Norwegian Entomological Society for fourteen years, was a fellow of the Norwegian Academy of Science and Letters and the Royal Norwegian Society of Sciences and Letters. He resided in Soknedal, and died in 2009.

References

Worked examples

Example 1 — a first encounter with Karl Erik Zachariassen

Start with the simplest possible case. Write down what Karl Erik Zachariassen 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 Karl Erik Zachariassen 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 Karl Erik Zachariassen 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 Karl Erik Zachariassen

In research: Karl Erik Zachariassen 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 Karl Erik Zachariassen 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: Karl Erik Zachariassen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1942 births, 2009 deaths, 20th-century Norwegian zoologists, so understanding it makes those chapters shorter.
In everyday life: Look for Karl Erik Zachariassen 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 Karl Erik Zachariassen in 20 minutes

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

Frequently asked questions

What is Karl Erik Zachariassen in simple terms?

Why does Karl Erik Zachariassen 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 Karl Erik Zachariassen?

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 Karl Erik Zachariassen.