biology

Karlis Princis

Karlis Princis 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 Karlis Princis rather than just read about it. In short: Kārlis Aleksandrs Princis (11 October 1893 – 25 March 1978) was a Latvian-born biologist who contributed to the study of the Blattodea while working at the Museum at Riga and later in Sweden. Princis was born in Venta, near Ventspils and was educated at the Riga Polytechnic.

Key takeaways

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

Reference excerpt

Kārlis Aleksandrs Princis (11 October 1893 – 25 March 1978) was a Latvian-born biologist who contributed to the study of the Blattodea while working at the Museum at Riga and later in Sweden. Princis was born in Venta, near Ventspils and was educated at the Riga Polytechnic. He served during World War I in the Russian army and returned to the university, receiving a master's degree in 1934 and joining the Zoological Institute in 1940. He became a director of the Museum of Natural History at Riga in 1942. In 1944 he took refuge in Sweden with assistance from N.A. Kemner at Lund University. He lived in Vastmanland in 1973 and died at a hospital in Västerås. Princis' most important work was on the systematics of cockroaches which he published as a volume of Junk's Orthopterorum Catalogus. He received an honorary Ph.D. in 1964 from the University of Lund.

References

Worked examples

Example 1 — a first encounter with Karlis Princis

Start with the simplest possible case. Write down what Karlis Princis 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 Karlis Princis 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 Karlis Princis 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 Karlis Princis

In research: Karlis Princis 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 Karlis Princis 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: Karlis Princis is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1893 births, 1978 deaths, 20th-century Latvian scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Karlis Princis 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Karlis Princis in 20 minutes

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

Frequently asked questions

What is Karlis Princis in simple terms?

Why does Karlis Princis 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 Karlis Princis?

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 Karlis Princis.