astronomy

Johannes Hillmann

Johannes Hillmann is a astronomy 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 Johannes Hillmann rather than just read about it. In short: Johannes Hillmann (1881–1943) was a German teacher, botanist, and lichenologist. Hillman was born in Berlin in 1881.

Key takeaways

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

Reference excerpt

Johannes Hillmann (1881–1943) was a German teacher, botanist, and lichenologist. Hillman was born in Berlin in 1881. He became a teacher after studying natural sciences at the University of Berlin. Hillmann researched lichens from the period 1916 to 1943, contributing 36 publications on the subject. He is perhaps best known for his contributions to the families Parmeliaceae and Teloschistaceae, which were published in Gottlob Ludwig Rabenhorst's influential work Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz. Hillman retired from teaching in 1939, and died in Berlin in 1943. His herbarium of specimens, located in Buckow, was destroyed during World War II. Four lichen species named after Hillman are Buellia hillmanii Erichsen (1930), Lecidea hillmannii Anders (1922), Micropeltella hillmanniana Kirschst. (1936), and Propolis hillmanniana Kirschst. (1935).

Selected works Hillmann, J. (1935). "Teloschistaceae". Dr. L. Rabenhorst's Krytogamen-Flora von Deutschland, Österreich und der Schweiz (in German). Vol. 9. Leipzig: Akademische Verlagsgesellschaft. pp. 1–36. Hillmann, J. (1936). "Parmeliaceae". Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Österreich und der Schweiz (in German). Vol. 9. Leipzig: Akademische Verlagsgesellschaft. pp. 1–309. Hillmann, J.; Grummann, V. (1957). Kryptogamenflora der Mark Brandenburg und angrenzender Gebiete. Band VIII: Flechten (in German). Berlin: Nikolassee: Gebrüder Borntraeger. pp. 1–898.{{cite book}}: CS1 maint: publisher location (link)

See also Category:Taxa named by Johannes Hillmann

References

Worked examples

Example 1 — a first encounter with Johannes Hillmann

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

In research: Johannes Hillmann appears in astronomy 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 Johannes Hillmann 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: Johannes Hillmann is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1881 births, 1943 deaths, 20th-century German botanists, so understanding it makes those chapters shorter.
In everyday life: Look for Johannes Hillmann 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 Johannes Hillmann in 20 minutes

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

Frequently asked questions

What is Johannes Hillmann in simple terms?

Johannes Hillmann (1881–1943) was a German teacher, botanist, and lichenologist. Hillman was born in Berlin in 1881.

Why does Johannes Hillmann matter?

Because it connects several astronomy 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 Johannes Hillmann?

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 Johannes Hillmann.