chemistry

János Irinyi

János Irinyi is a chemistry 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 János Irinyi rather than just read about it. In short: János Irinyi (sometimes also spelled János Irínyi; Hungarian pronunciation: [ˈjaːnoʃ ˈiriɲi]; in Romanian: Ioan Irimie; 18 May 1817 – 17 December 1895) was a Hungarian chemist and inventor of the noiseless and non-explosive match. He achieved this by mixing the yellow (also called white) phosphorus with lead dioxide instead of the potassium chlorate used previously.

Key takeaways

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

Reference excerpt

János Irinyi (sometimes also spelled János Irínyi; Hungarian pronunciation: [ˈjaːnoʃ ˈiriɲi]; in Romanian: Ioan Irimie; 18 May 1817 – 17 December 1895) was a Hungarian chemist and inventor of the noiseless and non-explosive match. He achieved this by mixing the yellow (also called white) phosphorus with lead dioxide instead of the potassium chlorate used previously.

Life The Irinyi family is an old Hungarian noble family of Szatmár County. It took its name from the village of Iriny in the county, which it owned, and at the beginning of the 19th century the family also held joint ownership of several other settlements in the county. The ancestors of the family fought under King Ladislaus IV of Hungary at the Battle of Marchfeld in 1278, where they killed the enemy king Ottokar II of Bohemia, and captured his son alive. For this service, King Ladislaus IV granted them the estate of Iriny in Szatmár County in 1278. The family's coat of arms also refers to this event. His father, János Irinyi had six children. Viktória (the mother of the famous Romanian writer and journalist Iosif Vulcan), Heléna, János, Antónia, József and Rozália. Of these, János (1817), Antónia (1820) and József (1822) were born in Albis, in Bihar County. János was baptized in Greek Orthodox Church faith, but he later converted to Calvinism. Together with his brother József, János Irinyi took part in the Hungarian Revolution of 1848 and was one of the first to draft the outline of the Twelve Points.

Legacy Asteroid 106869 Irinyi, discovered by Hungarian astronomer Krisztián Sárneczky and László L. Kiss at Piszkéstető Station in 2000, was named in his memory. The official naming citation was published by the Minor Planet Center on 22 January 2008 (M.P.C. 61767).

References

External links János Irinyi

Illustrations

Worked examples

Example 1 — a first encounter with János Irinyi

Start with the simplest possible case. Write down what János Irinyi claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 János Irinyi 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 János Irinyi 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 János Irinyi

In research: János Irinyi appears in chemistry 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 János Irinyi 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: János Irinyi is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1817 births, 1895 deaths, Chemist stubs, so understanding it makes those chapters shorter.
In everyday life: Look for János Irinyi 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 János Irinyi in 20 minutes

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

Frequently asked questions

What is János Irinyi in simple terms?

Why does János Irinyi matter?

Because it connects several chemistry 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 János Irinyi?

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 János Irinyi.