astronomy

Luboš Perek

Luboš Perek 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 Luboš Perek rather than just read about it. In short: Luboš Perek (26 July 1919 – 17 September 2020) was a Czech astronomer best known for his Catalogue of Galactic Planetary Nebulae co-written in 1967 with Luboš Kohoutek. He worked on the distribution of mass in the galaxy, high-velocity stars, planetary nebulae, definition of outer space, geostationary orbit, space debris, and management of outer space.

Key takeaways

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

Reference excerpt

Luboš Perek (26 July 1919 – 17 September 2020) was a Czech astronomer best known for his Catalogue of Galactic Planetary Nebulae co-written in 1967 with Luboš Kohoutek. He worked on the distribution of mass in the galaxy, high-velocity stars, planetary nebulae, definition of outer space, geostationary orbit, space debris, and management of outer space. Perek graduated from Masaryk University, Brno, in 1946, earned his PhD in Astronomy from Charles University, Prague, in 1956, and earned his DSc in Astronomy in 1961. He published 44 papers on stellar dynamics and planetary nebulae and 80 papers and articles on the geostationary orbit, definition of outer space, space debris, and protection of space environment. The asteroid 2900 Luboš Perek, discovered by his fellow astronomer Kohoutek, was named after him. The largest telescope in the Czech Republic was also named after Perek.

Positions Corresponding Member of the Czechoslovak Academy of Sciences in 1965 Associate Professor, Masaryk University from 1952 to 1956 Visiting Professor, Northwestern University 1964 General Secretary of the International Astronomical Union 1967–1970 Director of the Astronomical Institute of Czechoslovak Academy of Sciences 1968–1975 Chief, Outer Space Affairs Division, United Nations, New York City 1975–1980

Medals University of Liège (1969) ADION (1972) T. Hagecius de Hajek (1980) Nagy Ernö (1981) Zagreb University (1982) City of Paris (1982) Collège de France (1986) Prix Jules Janssen of the Societé Astronomique de France (1992)

References

External links

Illustrations

Worked examples

Example 1 — a first encounter with Luboš Perek

Start with the simplest possible case. Write down what Luboš Perek 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 Luboš Perek 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 Luboš Perek 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 Luboš Perek

In research: Luboš Perek 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 Luboš Perek 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: Luboš Perek is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1919 births, 2020 deaths, Charles University alumni, so understanding it makes those chapters shorter.
In everyday life: Look for Luboš Perek 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 Luboš Perek in 20 minutes

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

Frequently asked questions

What is Luboš Perek in simple terms?

Why does Luboš Perek 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 Luboš Perek?

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 Luboš Perek.