astronomy

Jan Sundell

Jan Sundell 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 Jan Sundell rather than just read about it. In short: Jan Sundell (10 July 1943 – 27 May 2019) was a Swedish Professor in Building Science, affiliated with Technical University of Denmark, University of Texas at Tyler, USA, Tsinghua- and Tianjin Universities in China. Biography Jan Sundell was born and grew up in Östersund, in the northern Swedish province of Jämtland.

Key takeaways

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

Reference excerpt

Jan Sundell (10 July 1943 – 27 May 2019) was a Swedish Professor in Building Science, affiliated with Technical University of Denmark, University of Texas at Tyler, USA, Tsinghua- and Tianjin Universities in China.

Biography Jan Sundell was born and grew up in Östersund, in the northern Swedish province of Jämtland. In 1961 he graduated from Högre Allmäna Läroverket. After military service, in 1963, he moved to Stockholm to attend Royal Institute of Technology in Stockholm and for studies at Stockholm University. After obtaining a master's degree in engineering from KTH, he worked for the Swedish authorities, with building codes and regulations for building ventilation. He worked at the National Board of Urban Planning and Building and the National Board of Occupational Safety and Health, where he was Head of section for Ventilation and Thermal Climate. In 1994 he defended his PhD-thesis in medical sciences at Karolinska Institutet. Both as a scientist and a government official he was a driving force in developing the research area of Indoor Air. He took part in founding the International Society of Indoor Air Quality and Climate (ISIAQ), and conferences Indoor Climate in Copenhagen 1978, Indoor Air in Stockholm 1984 and Healthy Buildings in Stockholm 1988, and he served as editor in chief for the Indoor Air Journal. He initiated and took active part in large national and international studies like the Dampness in Buildings and Health (DBH) in Sweden where the same concept later on have been used in Bulgaria, Denmark, USA, Singapore, Taiwan, and China, as well as the SELMA-study (Swedish Environmental Longitudinal, Mother and child, Asthma and allergy study). He published more than 150 peer reviewed articles. Over time he served on many committees and working groups, such as ASHRAE Environmental Health Committee, WHO - expert groups on indoor Air Quality and Health, and European Multidisciplinary Scientific Consensus Group on Ventilation and Health. He won several prizes, among them The Rockwool Prize in 2004 and the Pettenkofer Gold Medal in 2011.

References

Illustrations

Worked examples

Example 1 — a first encounter with Jan Sundell

Start with the simplest possible case. Write down what Jan Sundell 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 Jan Sundell 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 Jan Sundell 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 Jan Sundell

In research: Jan Sundell 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 Jan Sundell 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: Jan Sundell is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1943 births, 2019 deaths, Academic staff of Tsinghua University, so understanding it makes those chapters shorter.
In everyday life: Look for Jan Sundell 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 Jan Sundell in 20 minutes

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

Frequently asked questions

What is Jan Sundell in simple terms?

Why does Jan Sundell 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 Jan Sundell?

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 Jan Sundell.