astronomy

Johan Carl Krauss

Johan Carl Krauss 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 Johan Carl Krauss rather than just read about it. In short: Johan Carl Krauss (6 October 1759 in Öhringen – 19 March 1826 in Leiden), was a German-born professor of medicine at Leiden, botanist, taxonomist and author of botanical books. He was the son of Christophorus Adam Krauss, a physician at the court of Prince Hohenlohe, and Dorothea Zolner.

Key takeaways

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

Reference excerpt

Johan Carl Krauss (6 October 1759 in Öhringen – 19 March 1826 in Leiden), was a German-born professor of medicine at Leiden, botanist, taxonomist and author of botanical books. He was the son of Christophorus Adam Krauss, a physician at the court of Prince Hohenlohe, and Dorothea Zolner. He is best known for his publication "Afbeeldingen der fraaiste, meest uitheemsche boomen en heesters".

After initial tuition by his father, Johan served for a period as soldier and later resumed his studies in Erlangen and Stratsbourg, and upon completing these was appointed as physician to the Baden troops, who were stationed in Holland at the time. Accordingly, he found himself in Harderwijk where in 1795 he graduated at the University of Harderwijk with his thesis 'De praecipuis militum morbis eorumque causis' (On the chief military diseases and their causes). After a short stay in Arnhem, he settled as physician in Amsterdam in 1787, marrying Everdina Hey shortly thereafter. In May 1807 he was appointed as professor of theoretical, practical and forensic medicine at Harderwijk, and the following year held an 'Oratio de medicina systematica, eiusque usu ac abusu' (An oration on systematic medicine, and its use and abuse). In June 1810 he stepped down as rector and presented 'De perscrutatione mentis humanae maximum medico faciente emolumentum' (the investigation of the human mind, the greatest contribution made by the physician), in which he urges physicians to practise therapy.

In 1806 Krauss was elected a correspondent, living in the Netherlands, of the Royal Institute of the Netherlands.

Bibliography The standard author abbreviation Krauss is used to indicate this person as the author when citing a botanical name.

Afbeeldingen der artseny-gewassen met derzelver Nederduitsche en Latynsche beschryvinge, appeared in seven parts, from 1796 to 1813, and was published by J.C. Sepp en Zoon (Amsterdam) The series was an adaptation of Icones Plantarum Medicinalium, Abbildungen der Arzenygewächsen (1784–1790) by the German apothecary and botanist Johannes Zorn (1739–1799): part I (1796) was prepared by Dieterich Leonhard Oskamp (1756–1802); part II (1796) by Martinus Houttuyn (1720–1798); parts III (1798), IV (1800), V (1800) en VI (1801) by Johan Carl Krauss; part VII (1813) was later added by Adolphus Ypey (1749–1820).

References

Illustrations

Worked examples

Example 1 — a first encounter with Johan Carl Krauss

Start with the simplest possible case. Write down what Johan Carl Krauss 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 Johan Carl Krauss 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 Carl Krauss 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 Carl Krauss

In research: Johan Carl Krauss 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 Johan Carl Krauss 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 Carl Krauss is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1759 births, 1826 deaths, 18th-century German botanists, so understanding it makes those chapters shorter.
In everyday life: Look for Johan Carl Krauss 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 Carl Krauss in 20 minutes

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

Frequently asked questions

What is Johan Carl Krauss in simple terms?

Why does Johan Carl Krauss 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 Johan Carl Krauss?

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 Carl Krauss.