science

Harald Rosenthal

Harald Rosenthal 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 Harald Rosenthal rather than just read about it. In short: Harald Rosenthal (born 9 June 1937) is a German hydrobiologist and fisheries scientist known for his work in fish farming, ecology, and international cooperation. Life Rosenthal was born and raised in Berlin.

Key takeaways

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

Reference excerpt

Harald Rosenthal (born 9 June 1937) is a German hydrobiologist and fisheries scientist known for his work in fish farming, ecology, and international cooperation.

Life Rosenthal was born and raised in Berlin. From 1957 to 1962, he studied zoology, botany, chemistry, geography, and philosophy at the Freie Universität Berlin (Free University of Berlin). From 1963 to 1968, he studied hydrobiology and fishery science in Hamburg. He wrote his doctoral thesis in 1969 on mass rearing of larval herring and his habilitation thesis in 1981 on closed-circuit systems in fish farming and research. From 1989 to 2002, he was a professor at the Institut für Meereskunde (Institute for Marine Sciences) of Kiel University. Rosenthal research focused on two areas:but

Aquaculture: Here, he concentrated on applied research on the one hand, particularly on closed-circuit fish farms, and ecological aspects on the other, in particular control and prevention of pollution, and sustainability especially in developing countries. Ballast water: Rosenthal was one of the first to recognize and research the danger posed to ecosystems by the transport of marine life across huge distances in the ballast water of ships. He lobbied for regulations and other measures to combat this danger. In addition to his own research, Rosenthal plays an important role in the international collaboration of hydrobiologists and aquaculturists, in particular between Canada and Germany as well as Israel and Germany. Rosenthal is editor of the Journal of Applied Ichthyology and founder and president of the World Sturgeon Conservation Society (WSCS). He holds honorary doctorates of the universities of Edinburgh (1985), Moncton (1996), and Szczecin (2003) and is a member of the Royal Swedish Academy of Sciences.

References

Illustrations

Worked examples

Example 1 — a first encounter with Harald Rosenthal

Start with the simplest possible case. Write down what Harald Rosenthal 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 Harald Rosenthal 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 Harald Rosenthal 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 Harald Rosenthal

In research: Harald Rosenthal 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 Harald Rosenthal 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: Harald Rosenthal is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1937 births, 20th-century German zoologists, Fisheries scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Harald Rosenthal 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 Harald Rosenthal in 20 minutes

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

Frequently asked questions

What is Harald Rosenthal in simple terms?

Harald Rosenthal (born 9 June 1937) is a German hydrobiologist and fisheries scientist known for his work in fish farming, ecology, and international cooperation. Life Rosenthal was born and raised in Berlin.

Why does Harald Rosenthal 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 Harald Rosenthal?

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 Harald Rosenthal.