astronomy

Hans Geelmuyden

Hans Geelmuyden 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 Hans Geelmuyden rather than just read about it. In short: Hans Geelmuyden (10 January 1844 – 1 May 1920) was a Norwegian astronomer. He was born in Stavern.

Key takeaways

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

Reference excerpt

Hans Geelmuyden (10 January 1844 – 1 May 1920) was a Norwegian astronomer. He was born in Stavern. He was a relative of Ivar Christian Sommerschild Geelmuyden and Carl Victor Emanuel Geelmuyden, and the family had migrated from the Dutch Republic during the seventeenth century. Hans Geelmuyden was a grandfather of the writer of the same name. From 1890 to 1919 Hans Geelmuyden was a professor of astronomy at the University of Kristiania as well as the director of the observatory there. From 1892 to his death he edited the official Norwegian almanac. In all three positions he was succeeded by Jens Fredrik Schroeter.

References

Illustrations

Worked examples

Example 1 — a first encounter with Hans Geelmuyden

Start with the simplest possible case. Write down what Hans Geelmuyden 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 Hans Geelmuyden 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 Hans Geelmuyden 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 Hans Geelmuyden

In research: Hans Geelmuyden 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 Hans Geelmuyden 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: Hans Geelmuyden is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1844 births, 1920 deaths, Academic staff of the University of Oslo, so understanding it makes those chapters shorter.
In everyday life: Look for Hans Geelmuyden 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 Hans Geelmuyden in 20 minutes

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

Frequently asked questions

What is Hans Geelmuyden in simple terms?

Hans Geelmuyden (10 January 1844 – 1 May 1920) was a Norwegian astronomer. He was born in Stavern.

Why does Hans Geelmuyden 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 Hans Geelmuyden?

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 Hans Geelmuyden.