physics

Sten von Friesen

Sten von Friesen is a physics 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 Sten von Friesen rather than just read about it. In short: Sten von Friesen (March 18, 1907, Uppsala; September 9, 1996) was a Swedish physicist who was most known for having participated in the Swedish hit show Fråga Lund. Biography Sten von Friesen was born in Uppsala in 1907, and his father was the Swedish linguist Otto von Friesen.

Key takeaways

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

Reference excerpt

Sten von Friesen (March 18, 1907, Uppsala; September 9, 1996) was a Swedish physicist who was most known for having participated in the Swedish hit show Fråga Lund.

Biography Sten von Friesen was born in Uppsala in 1907, and his father was the Swedish linguist Otto von Friesen. He was awarded his Doctor of Philosophy in 1935 at Uppsala University for his research led by Manne Siegbahn on the measurement of wavelengths in the elements X-ray spectrum. von Friesen moved to the newly established Nobel Institute for Physics in Stockholm in 1937 along Siegbahn. Together they started the construction of Sweden's first cyclotron, but von Friesen was mobilized at the Finnish border after the outbreak of World War II shortly after the completion of the cyclotron. von Friesen became a professor at the Department of Physics at Lund University in 1948, and held the post until his retirement in 1972 when was succeeded by Hans Ryde. As a professor he continued his research on nuclear physics, and he was in charge when Lund University received its first particle accelerator. One of the highlights of his research happened when he and his team could show that the presence of elements in the Milky Way is the same as it is in the distant galaxies. For a wider public, he became known through his participation in the TV program Fråga Lund in the 1960s and 1970s, where he was one of six scientists in the Panel who answered questions from the audience. In addition, he became a member of the Royal Swedish Academy of Sciences in 1964. He is buried at Uppsala Old Cemetery in the same tomb as the father.

References

External links Oral history interview transcript with Sten von Friesen on 22 October 1971, American Institute of Physics, Niels Bohr Library & Archives

Worked examples

Example 1 — a first encounter with Sten von Friesen

Start with the simplest possible case. Write down what Sten von Friesen claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 Sten von Friesen 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 Sten von Friesen 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 Sten von Friesen

In research: Sten von Friesen appears in physics 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 Sten von Friesen 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: Sten von Friesen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1907 births, 1996 deaths, 20th-century Swedish physicists, so understanding it makes those chapters shorter.
In everyday life: Look for Sten von Friesen 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 Sten von Friesen in 20 minutes

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

Frequently asked questions

What is Sten von Friesen in simple terms?

Sten von Friesen (March 18, 1907, Uppsala; September 9, 1996) was a Swedish physicist who was most known for having participated in the Swedish hit show Fråga Lund. Biography Sten von Friesen was born in Uppsala in 1907, and his father was the Swedish linguist Otto von Friesen.

Why does Sten von Friesen matter?

Because it connects several physics 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 Sten von Friesen?

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 Sten von Friesen.