science

Wilhelm Ruhland

Wilhelm Ruhland 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 Wilhelm Ruhland rather than just read about it. In short: Eugen Otto Wilhelm Ruhland (7 August 1878 – January 5, 1960) was a German botanist and plant physiologist. He served as a professor of botany at the universities of Tübingen and Erlangen.

Key takeaways

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

Reference excerpt

Eugen Otto Wilhelm Ruhland (7 August 1878 – January 5, 1960) was a German botanist and plant physiologist. He served as a professor of botany at the universities of Tübingen and Erlangen. Ruhland was born in Schleswig where his father was a government official. After studies at Köllnisches Gymnasium in Berlin, he went to the University of Berlin in 1896. He received a doctorate in 1899 and habilitated in 1903. He then lectured at the University of Berlin and simultaneously worked on the family Eriocaulaceae and contributed to Adolf Engler's volumes on plants (volume 13). In 1911 he joined the University of Halle where he worked on agricultural botany (and fungal infections of crops) and in 1918 he became a professor at the University of Tübingen. In 1922 he became a full professor at the University of Leipzig. Along with Hans Winkler he founded and edited the journal Planta from 1925. In 1933 he was a signatory to the Vow of allegiance of the Professors of the German Universities and High-Schools to Adolf Hitler and the National Socialistic State. From 1947 he served as an honorary professor at the University of Erlangen. From 1955 he contributed to the Handbuch der Pflanzenphysiologie. A fungus Ruhlandiella is named after him.

References

External links Biography - Halle-Wittenberg Eriocaulaceae. In: Engler, Das Pflanzenreich. Volume 13 (1903) Handbuch der Pflanzenphysiologie (Controlled lending on the Internet Archive) Volume 1 Volume 2 Volume 3 Volume 4 Volume 5 Volume 6 Volume 7 Volume 8 Volume 9 Volume 10 Volume 11 Volume 12 Volume 13 Volume 14 Volume 15 Volume 16 Volume 17-part 1 Volume 17-part 2 Volume 18

Worked examples

Example 1 — a first encounter with Wilhelm Ruhland

Start with the simplest possible case. Write down what Wilhelm Ruhland 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 Wilhelm Ruhland 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 Wilhelm Ruhland 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 Wilhelm Ruhland

In research: Wilhelm Ruhland 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 Wilhelm Ruhland 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: Wilhelm Ruhland is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1878 births, 1960 deaths, 20th-century German botanists, so understanding it makes those chapters shorter.
In everyday life: Look for Wilhelm Ruhland 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 Wilhelm Ruhland in 20 minutes

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

Frequently asked questions

What is Wilhelm Ruhland in simple terms?

Eugen Otto Wilhelm Ruhland (7 August 1878 – January 5, 1960) was a German botanist and plant physiologist. He served as a professor of botany at the universities of Tübingen and Erlangen.

Why does Wilhelm Ruhland 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 Wilhelm Ruhland?

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 Wilhelm Ruhland.