biology

Jan Daniel Preysler

Jan Daniel Preysler is a biology 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 Jan Daniel Preysler rather than just read about it. In short: Jan Daniel Preysler, also known as Johan Daniel Preyssler or Johann Daniel Preyßler (1768, Prague – 23 April 1839) was a Czech entomologist. In 1789 he became an adjunct to the Imperial administrative office in Prague, where he was in 1801 promoted to Administrator, and in 1805 became a Counselor.

Key takeaways

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

Reference excerpt

Jan Daniel Preysler, also known as Johan Daniel Preyssler or Johann Daniel Preyßler (1768, Prague – 23 April 1839) was a Czech entomologist. In 1789 he became an adjunct to the Imperial administrative office in Prague, where he was in 1801 promoted to Administrator, and in 1805 became a Counselor. After that, in 1807 he was board member of the St. John the Baptist Orphanage in Prague. Between 1808 and 1832 are no records of his life—he probably lived outside Prague or abroad. He returned to Bohemia in 1833 as a mining engineer in Zbiroh. Preysler worked mainly on Coleoptera but also on other insects and spiders.

Works 1790 Verzeichnis böhmischen Insekten. Prag, 108 pp + 2 medirytiny. 1791 Beschreibungen und Abbildungen derjenigen Insekten, welche in Sammlungen nicht aufzubewahren sind, dann aller, die noch ganz neu, und solcher, von denen wir noch keine oder doch sehr schlechte Abbildung besitzen. In: Mayer, J. (ed.): Sammlung physikalischer Aufsätze, besonders die Böhmische Naturgeschichte betreffend, von einer Gesellschaft Böhmischer Naturforscher. I. Dresden: p. 55 – 151. Preysler, J. D.& Lindacker J. T. & Hofer J. K.: 1793, Beobachtungen über Gegenstände der Natur auf einer Reise durch den Böhmerwald im Sommer 1791. In: Mayer J. (ed.): Sammlung physikalischer Aufsätze, besonders die Böhmische Naturgeschichte betreffend, von einer Gesellschaft Böhmischer Naturforscher. III. Dresden: p. 135 – 378. New species described by Preysler include Claviger testaceus Preysler, 1790, Cheilosia rufipes Preysler, 1793,Aranea folium Preysler, 1791 and Chrysopilus asiliformis Preysler, 1791. His collection of insects is lost, but several specimens of insects are preserved in the Prague National Museum.

References Koleška, Z.: 1990, Seznam biografií čs. entomologů 12. (entomologové nežijíci) [Popp – Rippl]. In: Zprávy čs. spol. ent., ČSAV, 26: p. 413 – 452, Tab. 27 – 29: p. 421 – 423. Groll, E. K. [ed.]: 2006, Entomologen der Welt (Biographien, Sammlungsverbleib). Datenbank 2. Version, DEI im ZALF e. V.: Preysler, Jan Daniel“: (internet).

Worked examples

Example 1 — a first encounter with Jan Daniel Preysler

Start with the simplest possible case. Write down what Jan Daniel Preysler claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Jan Daniel Preysler 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 Jan Daniel Preysler 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 Jan Daniel Preysler

In research: Jan Daniel Preysler appears in biology 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 Jan Daniel Preysler 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: Jan Daniel Preysler is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1768 births, 1839 deaths, Czech people from the Austrian Empire, so understanding it makes those chapters shorter.
In everyday life: Look for Jan Daniel Preysler 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 Jan Daniel Preysler in 20 minutes

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

Frequently asked questions

What is Jan Daniel Preysler in simple terms?

Why does Jan Daniel Preysler matter?

Because it connects several biology 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 Jan Daniel Preysler?

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 Jan Daniel Preysler.