astronomy

Konstanty Janicki

Konstanty Janicki 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 Konstanty Janicki rather than just read about it. In short: Konstanty Stanisław Janicki (November 16, 1876 – October 25, 1932) was a Polish zoologist who specialized in parasitology. An influential teacher and professor at the University of Warsaw, he is considered as the founder of parasitology research in Poland.

Key takeaways

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

Reference excerpt

Konstanty Stanisław Janicki (November 16, 1876 – October 25, 1932) was a Polish zoologist who specialized in parasitology. An influential teacher and professor at the University of Warsaw, he is considered as the founder of parasitology research in Poland.

Biography Janicki was born in Moscow. His mother Emilia née Pellizzaro was of Italian origin and his father Stanisław was a noted engineer. After graduating from the Wojciech Górski Real School in Warsaw he went to Leipzig in 1894 and graduated in the natural sciences in 1898. He was influenced by Rudolf Leuckart. He then went to Freiburg im Breisgau and attended the lectures of August Weismann. In 1901 he worked in Basel under Friedrich Zschokke on tapeworms and received a doctorate in 1906. In 1908 he worked in Rome under Giovanni Battista Grassi. From 1911 he worked in Basel examining development in the Cestodes. He became a professor of zoology in 1919 at the University of Warsaw. With Feliks Rosen he studied the life cycle of Diphyllobothrium latum. They suggested that copepods carried an intermediate stage. He also studied stages of parasites in fish, travelling twice to the Volga to examine the tapeworms of sturgeon (Amphilina foliacea) suggesting that they developed by neoteny. He studied the life history of Cystopsis acipenseri along with Karel Rašin. He also began to study protozoan parasites and described what he called the parabasal apparatus.

Major works Janicki's influential publications included:

Janicki C., 1908. Contribuzione alla conesceza di alcuni protozoi parassiti della Periplaneta ortientalis (Lophomonas blattarum Stein: L. striata Butschli; Amoeba blattae Butschli). Atti della Reale Accademia dei Lincei, Rendiconti delle Classe di Scienze Fisiche, Matematiche e Naturali, Roma 17, 140–151. Janicki C., 1909. Uber Kern und Kernteilung bei Entamoeba blattae Butschli. Biologisches Centrablatt 29, 381–393. Janicki C., 1910. Untersuchungen an parasitichen Flagellaten. I. Lophomonas blattarum Stein, L. striata Butschli. Zeitschrift für Wissenschaftliche Zool. 95, 243–315. Janicki C., 1911. Zur Kenntnis des Parabasalapparats bei parasitischen Flagellaten. Biologisches Centralblatt 31, 321–330. Janicki C., 1912. Bemerkungen zum Kernteilungsvorgang bei Flagellaten, namentlich bei parasitischen Formen. Verhandlungen der Naturforscheden Gesellschaft in Basel 23, 82–111. Janicki C., 1912. Untersuchungen as parasitischen Arten der Gattung Paramoeba Schaudinn P. pigmentifera Grassi und P. chaeognathi Grassi. Verhandlungen der Naturforschenden Geselchaft in Basel 23, 6-21. Janicki C., 1915. Untersuchungen an parasitischen Flagellaten. 2. Die Gattung Devescovina, Parajoenia, Stephanonympha, Calonympha. Uber den Parabasalapparat. Über Kernkonstitution und Kernteilung Zeit. wiss. Zool. 112:573-691. Janicki C., 1920. Grudlinien einer “Cercomer” Theorie zur Morphologie der Trematoden und Cestoden. Festschr. für Zschokke. 30, 1-22. Janicki C., 1928. Studien am Genus Paramoeba Schaund. Neue Folge I. Zeitschrift für Wissenschaftliche Zool. 131, 588–644. Janicki C., 1929. Neue Beitrage uber Paramoeba Schaud. (Comptes Rendus). 10 Congres International de Zoologie, Budapest, 4-10 Sept. 1927, Deuxieme partie 903–905. Janicki C., 1930. Über die jüngsten Zustände von Amphilina foliacea in der Fischleibeshöhle, sowie Generelles zur Auffassung de Genus Amphilina. G. Wagen. Zool. Anz. 90, 190–205. Janicki C., 1932. Studien am Genus Paramoeba Schaud. Neue Polge II. Uber das Trichopodium, nebst einer Erganzung zum 1 Teil. Zeitschrift für Wissenschaftliche Zool. 142. 587–623. Janicki C., Rosen F., 1917. Le cycle evolutif du Dibothriocephalus latus L. Recherches experimentalles et observation. Bull. Soc. Nauchatel. Sci. Nat. 42, 19–53.

Personal character Colleagues noted that Janicki was a reserved person, spoke little at conferences but excelled in experimental skills and in his lectures. He held conservative views, suggesting that universities were not suitable for women and had prejudices against Jews, possibly due to his interactions with Feliks Rosen. He also hated entomology. His closest colleague was Jan Tur (1875-1942). Janicki suffered from an ailment and was said to have been depressed. He committed suicide by hanging in the toilet of his home. Two days earlier he had asked a janitor to purchase rope supposedly for the curtains. He is buried in the Powązki Cemetery.

References

External links Photographs from Janicki's collection

Illustrations

Worked examples

Example 1 — a first encounter with Konstanty Janicki

Start with the simplest possible case. Write down what Konstanty Janicki 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 Konstanty Janicki 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 Konstanty Janicki 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 Konstanty Janicki

In research: Konstanty Janicki 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 Konstanty Janicki 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: Konstanty Janicki is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1876 births, 1932 deaths, Academic staff of the University of Warsaw, so understanding it makes those chapters shorter.
In everyday life: Look for Konstanty Janicki 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 Konstanty Janicki in 20 minutes

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

Frequently asked questions

What is Konstanty Janicki in simple terms?

Why does Konstanty Janicki 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 Konstanty Janicki?

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 Konstanty Janicki.