science

Marianne Plehn

Marianne Plehn 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 Marianne Plehn rather than just read about it. In short: Marianne Plehn (30 October 1863 – 18 January 1946) was a German zoologist. She was the first woman to be awarded a doctorate at the ETH Zurich and the first woman to be appointed as professor in Bavaria in 1914.

Key takeaways

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

Reference excerpt

Marianne Plehn (30 October 1863 – 18 January 1946) was a German zoologist. She was the first woman to be awarded a doctorate at the ETH Zurich and the first woman to be appointed as professor in Bavaria in 1914. Plehn is commemorated in the names of three polyclads and 12 disease agents of fishes. The breadth of her research on diseases of fishes defined the scientific study in this area. She published 114 scientific papers on the subject. She worked with Bruno Hofer and has been honoured as one of the founders of fish pathology.

Early life Plehn was born 1863 in Lubochen, then part of west Prussia. She had five siblings and her father was a manor lord. Her older brothers studied medicine. Aged 27 Plehn moved to Zurich to take up university education in zoology, botany and geology. With financial support from her uncle she studied at the ETH Zurich, where she passed the examination as instructor for natural science in 1893. In 1896 she received her PhD in zoology, making her the first woman awarded a doctorate by the ETH Zurich. Natural science was part of the philosophy department of the University of Zurich and while preparing for her doctorate she met and formed a lifelong friendship with Ricarda Huch, with whom she continued to exchange letters.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Marianne Plehn

Start with the simplest possible case. Write down what Marianne Plehn 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 Marianne Plehn 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 Marianne Plehn 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 Marianne Plehn

In research: Marianne Plehn 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 Marianne Plehn 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: Marianne Plehn is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1863 births, 1946 deaths, 19th-century German women scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Marianne Plehn 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 Marianne Plehn in 20 minutes

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

Frequently asked questions

What is Marianne Plehn in simple terms?

Why does Marianne Plehn 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 Marianne Plehn?

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 Marianne Plehn.