chemistry

Gustaf Ljunggren (chemist)

Gustaf Ljunggren (chemist) 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 Gustaf Ljunggren (chemist) rather than just read about it. In short: Gustaf Axel C:son Ljunggren (27 October 1894 – 12 August 1966) was a Swedish chemist. Ljunggren served as an assistant at Lund University's chemical department from 1918 to 1920.

Key takeaways

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

Reference excerpt

Gustaf Axel C:son Ljunggren (27 October 1894 – 12 August 1966) was a Swedish chemist. Ljunggren served as an assistant at Lund University's chemical department from 1918 to 1920. Subsequently, he taught general chemistry in the medical faculty at the university until 1928, earning a Licentiate of Philosophy degree in 1921. He chaired the Chemical Society of Lund from 1922 to 1926 and attained a Doctor of Philosophy degree in 1925, also becoming a lieutenant in the Swedish Coastal Artillery's reserve. Later, he held various roles, including being a docent in chemistry, a professor at the Swedish Armed Forces Chemical Institute, and the head of the Department of Chemistry at the Swedish National Defence Research Institute from 1945 to 1961. Additionally, he contributed to defense-related committees and served as a chemistry teacher at military colleges.

Early life Ljunggren was born on 27 October 1894 in Trelleborg, Sweden, the son of M.D. Carl-August Ljunggren and his wife Elise Key. His paternal grandfather was the literary historian and member of the Swedish Academy Gustaf Ljunggren (1823–1905); his uncle was the chief librarian Evald Ljunggren (1865–1935); his brother was the physician Einar Ljunggren (1896–1986). He received a Bachelor of Arts degree from Lund University in 1914.

Career Ljunggren worked as an assistant at the chemical department at Lund University from 1918 to 1920. Ljunggren was a teacher of general chemistry within the medical faculty at Lund University from 1920 to 1928 and he received a Licentiate of Philosophy degree in 1921. He was chairman of the Chemical Society of Lund (Kemiska föreningen i Lund) from 1922 to 1926 and in 1925 he received a Doctor of Philosophy degree and became a lieutenant in the Swedish Coastal Artillery's reserve. In 1925, Ljunggren worked as a docent in chemistry and from 1937 he was a professor at the Swedish Armed Forces Chemical Institute (Försvarsväsendets kemiska anstalt, FKA) (from 1945 called the Swedish National Defence Research Institute). He was chemistry teacher at the Artillery and Engineering College from 1942 and he was a member of the Research Council of the Swedish Armed Forces (Försvarets forskningsnämnd) during 1943. Ljunggren was head of the Department of Chemistry (FOA 1) at the Swedish National Defence Research Institute from 1945 from 1961 and he became a member of the Air Raid Shelter Investigation of 1948 (1948 års skyddsrumsutredning) and of the Defense Medical Board (Försvarsmedicinska nämnden) in 1947. He was chemistry teacher at the Royal Swedish Naval Staff College and the Royal Swedish Army Staff College from 1952. Ljunggren was also a member of the Swedish Medical Society, the Swedish Chemical Society (Kemistsamfundet), the American Chemical Society, the Rotary International, and was an honorary member of Lund Academic Golf Club (Lunds akademiska golfklubb). He also wrote scientific papers on biochemistry and organic chemistry as well as investigations and writings on various military-technical research problems.

Personal life On 24 August 1929 in Ekeby, Malm, he married Ruth Victoria Malm (born 25 July 1901), the daughter of Carl Wilhelm Malm and Amelie Cecilia Nilsson. He was the father of Margareta (born 1930) and Jan-Gustaf (born 1933).

Awards and decorations

Swedish Commander 1st Class of the Order of the Polar Star Swedish Civil Protection Association Medal of Merit in gold National Air Protection Federation Medal of Merit in gold National Air Protection Federation Merit Badge in gold

Foreign Commander of the Order of the Dannebrog

Honours Member of the Royal Swedish Academy of War Sciences (1946) Member of the Royal Swedish Academy of Engineering Sciences (1955) Honorary Doctor of Medicine, Lund University (1958) Corresponding member of the Royal Swedish Society of Naval Sciences (1959) Honorary member of the Royal Swedish Academy of Engineering Sciences (1959)

References

External links Entry at Svenskt biografiskt lexikon (in Swedish)

Worked examples

Example 1 — a first encounter with Gustaf Ljunggren (chemist)

Start with the simplest possible case. Write down what Gustaf Ljunggren (chemist) 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 Gustaf Ljunggren (chemist) 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 Gustaf Ljunggren (chemist) 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 Gustaf Ljunggren (chemist)

In research: Gustaf Ljunggren (chemist) 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 Gustaf Ljunggren (chemist) 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: Gustaf Ljunggren (chemist) is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1894 births, 1966 deaths, 20th-century Swedish chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Gustaf Ljunggren (chemist) 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 Gustaf Ljunggren (chemist) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Gustaf Ljunggren (chemist) 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.
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Frequently asked questions

What is Gustaf Ljunggren (chemist) in simple terms?

Gustaf Axel C:son Ljunggren (27 October 1894 – 12 August 1966) was a Swedish chemist. Ljunggren served as an assistant at Lund University's chemical department from 1918 to 1920.

Why does Gustaf Ljunggren (chemist) 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 Gustaf Ljunggren (chemist)?

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 Gustaf Ljunggren (chemist).