chemistry

Heinrich Hlasiwetz

Heinrich Hlasiwetz 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 Heinrich Hlasiwetz rather than just read about it. In short: Heinrich Hlasiwetz (7 April 1825 – 7 October 1875) was an Austrian chemist. Life Hlasiwetz was born in Reichenberg, Bohemia, Austrian Empire (now Liberec, Czech Republic).

Key takeaways

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

Reference excerpt

Heinrich Hlasiwetz (7 April 1825 – 7 October 1875) was an Austrian chemist.

Life Hlasiwetz was born in Reichenberg, Bohemia, Austrian Empire (now Liberec, Czech Republic). Son of a pharmacist, he studied at the University of Jena, where his instructors included Johann Wolfgang Döbereiner (1780-1849), Heinrich Wilhelm Ferdinand Wackenroder and Matthias Jakob Schleiden. Later he studied under Josef Redtenbacher in Prague. In 1848 he earned the diploma of Magister Pharmacia, and during the following year received his doctorate in chemistry. In 1849 he began work as an assistant to Friedrich Rochleder, later becoming an associate professor of chemistry at the University of Innsbruck (1854). In 1867 he became a professor at the Vienna University of Technology, where from 1869 he represented general and analytical chemistry. During his career he largely worked with resins, tannins and protein compounds. Hlasiwetz is remembered for his chemical analysis of quercitrin, phloroglucinol, resorcinol and creosote.

Written works Über das Quercitrin, 1859 Über eine neue Säure aus dem Milchzucker, 1859.

References

Further reading "Hlasiwetz Heinrich". In: Österreichisches Biographisches Lexikon 1815–1950 (ÖBL). Vol. 2, Austrian Academy of Sciences, Vienna 1959, p. 340. Wilfrid Oberhummer (1972). "Hlasiwetz, Heinrich". Neue Deutsche Biographie (in German). Vol. 9. Berlin: Duncker & Humblot. pp. 277–278. Johannes Uray, Organische Chemie in chemischer Forschung und Lehre an österreichischen Universitäten zwischen 1840 und 1870. In: Bericht über den 25. Österreichischen Historikertag in St. Pölten 2008. St. Pölten 2010, pp. 402–427.

External links [4] biography at Allgemeine Deutsche Biographie

Illustrations

Worked examples

Example 1 — a first encounter with Heinrich Hlasiwetz

Start with the simplest possible case. Write down what Heinrich Hlasiwetz 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 Heinrich Hlasiwetz 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 Heinrich Hlasiwetz 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 Heinrich Hlasiwetz

In research: Heinrich Hlasiwetz 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 Heinrich Hlasiwetz 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: Heinrich Hlasiwetz is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1825 births, 1875 deaths, 19th-century Austrian chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Heinrich Hlasiwetz 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 Heinrich Hlasiwetz in 20 minutes

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

Frequently asked questions

What is Heinrich Hlasiwetz in simple terms?

Heinrich Hlasiwetz (7 April 1825 – 7 October 1875) was an Austrian chemist. Life Hlasiwetz was born in Reichenberg, Bohemia, Austrian Empire (now Liberec, Czech Republic).

Why does Heinrich Hlasiwetz 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 Heinrich Hlasiwetz?

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 Heinrich Hlasiwetz.