biology

Johan Hjort

Johan Hjort is a biology 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 Johan Hjort rather than just read about it. In short: Johan Hjort (18 February 1869 – 7 October 1948) was a Norwegian fisheries scientist, marine zoologist, and oceanographer. He was among the most prominent and influential marine zoologists of his time.

Key takeaways

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

Reference excerpt

Johan Hjort (18 February 1869 – 7 October 1948) was a Norwegian fisheries scientist, marine zoologist, and oceanographer. He was among the most prominent and influential marine zoologists of his time.

The early years Johan Hjort was the first child of Johan S. A. Hjort, a professor of ophthalmology, and Elisabeth Falsen, of the Falsen family. Among his siblings was the engineer Alf Hjort, who became a leader of subwater tunnel constructions in New York City. Johan Hjort had wanted to become a zoologist since his early schooldays, but to please his father he took initial courses in medicine, before following Fridtjof Nansen's advice and his own wish, leaving for the Ludwig-Maximilians-Universität München to study zoology with Richard Hertwig. He then worked at the Stazione Zoologica in Naples on an embryological problem, which led to his doctorate in Munich at the age of 23 in 1892. He returned to Norway to become curator of the University Zoological Museum, where he developed more modern courses for students, and in 1894 he succeeded G. O. Sars as Research Fellow in Fisheries. After a year at University of Jena he was in 1897 appointed the directorship of the University Biological Station in Drøbak.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Johan Hjort

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

In research: Johan Hjort appears in biology 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 Johan Hjort 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: Johan Hjort is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1869 births, 1948 deaths, 19th-century Norwegian zoologists, so understanding it makes those chapters shorter.
In everyday life: Look for Johan Hjort 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 Johan Hjort in 20 minutes

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

Frequently asked questions

What is Johan Hjort in simple terms?

Why does Johan Hjort matter?

Because it connects several biology 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 Johan Hjort?

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 Johan Hjort.