science

Hjalmar Kiærskou

Hjalmar Kiærskou is a science 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 Hjalmar Kiærskou rather than just read about it. In short: Hjalmar Frederik Christian Kiærskou (6 August 1835 in Copenhagen – 18 March 1900), sometimes also stated as Hjalmar Kiaerskov, was a Danish botanist. Hjalmar Kiærskou was the son of landscape artist Frederik Christian Jakobsen Kiærskou (1805–1891).

Key takeaways

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

Reference excerpt

Hjalmar Frederik Christian Kiærskou (6 August 1835 in Copenhagen – 18 March 1900), sometimes also stated as Hjalmar Kiaerskov, was a Danish botanist. Hjalmar Kiærskou was the son of landscape artist Frederik Christian Jakobsen Kiærskou (1805–1891). In 1862 he graduated as Magister for Science. In 1861 he became an assistant at the University of Copenhagen Botanical Garden. From 1875 to 1883 he was librarian at the botanical library. In 1873 he married his cousin Margrethe Olivia Gindrup. In 1883 he became an inspector at the Natural History Museum of Denmark. From 1869 to 1893 he was editor of the journal Botanisk Tidsskrift. From 1882 to 1889 he was teacher in the Monrad'ske Kursus (a course named in honour to the Danish prime minister Ditlev Gothard Monrad) at Danmarks Lærerhøjskole (Denmark's Teacher's College). In 1882 he was lecturer as the polytechnic institute. From 1876 to 1883 he was assistant at the chemical laboratory of Sigfred Frederik Edvard Valdemar Stein. Kiærskou published the scientific descriptions of several plant taxa from the families Lythraceae and Myrtaceae, in particular from Spain and Brazil. Together with Samsøe Lund he wrote a monograph about the cultivated forms of the cabbage, the beet, and the rapeseed. This botanist is denoted by the author abbreviation Kiaersk. when citing a botanical name.

Selected works 1884: En monografisk skildring af havekaalens, rybsens og rapsens kulturformer (with Samsøe Lund) 1890: Myrtaceae ex India occidentali a dominis Eggers, Krug, Sintenis, Stahl aliisque collectae 1893: Enumeratio Myrtacearum Brasiliensium quas collegerunt viri doctissimi Glaziou, Lund, Mendona, Raben, Reinhardt, Schenck, Warming aliique. Hauniae. Apud. Jul. Gjellerup. Ex Officina. Hoffensbergiana, 1893.

Notes

References Hans Olrik: Danmarks Lærerhøjskole. 1856–1906. Nordisk Forlag, Copenhagen, 1906. Projekt Runeberg: Dansk biografisk Lexikon "Hjalmar Kiærskou". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved May 16, 2009.

Worked examples

Example 1 — a first encounter with Hjalmar Kiærskou

Start with the simplest possible case. Write down what Hjalmar Kiærskou claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Hjalmar Kiærskou 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 Hjalmar Kiærskou 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 Hjalmar Kiærskou

In research: Hjalmar Kiærskou appears in science 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 Hjalmar Kiærskou 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: Hjalmar Kiærskou is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1835 births, 1900 deaths, 19th-century Danish botanists, so understanding it makes those chapters shorter.
In everyday life: Look for Hjalmar Kiærskou 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 Hjalmar Kiærskou in 20 minutes

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

Frequently asked questions

What is Hjalmar Kiærskou in simple terms?

Why does Hjalmar Kiærskou matter?

Because it connects several science 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 Hjalmar Kiærskou?

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 Hjalmar Kiærskou.