astronomy

Hugó Lojka

Hugó Lojka 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 Hugó Lojka rather than just read about it. In short: Hugó Lojka (6 January 1845 – 7 September 1887) was a teacher and lichenologist. He was one of the first researchers of Hungarian cryptogams, especially lichens.

Key takeaways

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

Reference excerpt

Hugó Lojka (6 January 1845 – 7 September 1887) was a teacher and lichenologist. He was one of the first researchers of Hungarian cryptogams, especially lichens. He was an ethnic Hungarian working in Austria-Hungary.

Life Lojka was born on 6 January 1845 in Gelsendorf (Zahirne) in Galicia. His father was an evangelical minister from Moravia who had become a naturalized citizen of Hungary, and instilled a love of Hungarian nationality in his children. The young Lojka attended elementary school in Stryi, four classes of middle school in Lviv, and the remainder of his schooling in Eperjes, where the relatives of his father's first wife lived. Lojka attended the University of Vienna during 1862 to 1868. He studied to become a physician, although he spent much of his time in the study of botany. Circumstances prevented him from completing his medical degree, so he went to Budapest. There he obtained a teacher's certificate in mathematics, physics, and chemistry, and went on to become a teacher. He taught first at a junior high school, later at an urban girls' school, and finally at the state girls' high school. In 1884, Lojka collected lichens in Tirolia distributing them under the title Iter Tirolense 1884. In 1886, on his return from an extended journey in Transylvania, he contracted pleurisy, which compelled him to give up teaching. He died on 7 September 1887, at the age of 42. Lojka collected lichens from all over Hungary from 1862 until his death with an exsiccata called Lichenotheca regni Hungarici exsiccati (1882–1884). His herbarium was purchased by the Vienna National History Museum. Outside of Europe, specimens collected by Lojka are held by Te Papa and the National Herbarium of Victoria, Royal Botanic Gardens Victoria. Lojka was also sent specimens from foreign collectors for identification or for circulation in his published exsiccatae (sets of dried herbarium specimens for limited distribution). Examples include lichens collected by New Zealand physician and botanist Charles Knight and by Australian naturalist Richard Helms that were included in Lojka's Lichenotheca Universalis (1885–1886).

Eponymy Lojka has had many species named in his honour. These include: Amphisphaeria lojkae Rehm (1906); Biatora lojkana J.Lahm; Biatorina lojkana J.Lahm (1876); Caloplaca lojkae Servít & Nádv. (1936); Gloniopsis lojkae Rehm (1906); Helminthocarpon lojkanum Müll.Arg. (1887); Lachnea lojkaeana Rehm (1895); Lecanora lojkae Vain. (1899); Lecanora lojkaeana Szatala (1954); Lecanora lojkahugoi S.Y.Kondr., Lőkös & Hur (2015); Lecidea lojkae Szatala (1932); Lichinella lojkana Hue (1898); Parmelia lojkana Gyeln. (1932); Polyblastia lojkana Zschacke (1914); Puccinia lojkaiana Thüm. (1876); Pyrenopeziza lojkae Rehm (1870); Ramalina lojkana Motyka (1961); Ranunculus lojkae Sommier et Levier; Sagedia lojkana Poetsch (1872); Sordaria lojkaeana Rehm (1888); Sychnogonia lojkana Hazsl. (1884); Thelidium lojkanum Szatala (1925); Thelopsis lojkana Nyl. (1881); and Verrucaria lojkae Servít (1946).

Illustrations

Worked examples

Example 1 — a first encounter with Hugó Lojka

Start with the simplest possible case. Write down what Hugó Lojka 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 Hugó Lojka 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 Hugó Lojka 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 Hugó Lojka

In research: Hugó Lojka 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 Hugó Lojka 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: Hugó Lojka is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1845 births, 1887 deaths, 19th-century Hungarian botanists, so understanding it makes those chapters shorter.
In everyday life: Look for Hugó Lojka 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 Hugó Lojka in 20 minutes

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

Frequently asked questions

What is Hugó Lojka in simple terms?

Hugó Lojka (6 January 1845 – 7 September 1887) was a teacher and lichenologist. He was one of the first researchers of Hungarian cryptogams, especially lichens.

Why does Hugó Lojka 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 Hugó Lojka?

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 Hugó Lojka.