physics

Jan V. Sengers

Jan V. Sengers 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 Jan V. Sengers rather than just read about it. In short: Jan Vincent Sengers (born May 27, 1931) is a Dutch–American physicist and a distinguished university professor emeritus at the Institute for Physical Science and Technology of University of Maryland. He is known for seminal contributions in critical and non-equilibrium phenomena in soft condensed matter.

Key takeaways

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Reproduce the core statement of Jan V. Sengers from memory before moving on to harder problems.

Reference excerpt

Jan Vincent Sengers (born May 27, 1931) is a Dutch–American physicist and a distinguished university professor emeritus at the Institute for Physical Science and Technology of University of Maryland. He is known for seminal contributions in critical and non-equilibrium phenomena in soft condensed matter.

Education Jan Sengers received his bachelor's degree in physics and mathematics in 1952, his master’s degree in physics in 1955, and his Ph.D. in physics in 1962, all cum laude from the University of Amsterdam.

Career In 1963 Jan Sengers, together with his spouse Anneke Levelt Sengers, emigrated to the United States to become a physicist at the National Bureau of Standards (NBS) that became the National Institute of Standards and Technology (NIST) in 1988. He joined the University of Maryland, College Park in 1968, first as associate professor and subsequently as professor in the Institute for Molecular Physics that was merged with the Institute for Fluid Dynamics and Applied Mathematics to become the Institute for Physical Science and Technology (IPST) in 1976. At the University of Maryland, he was also affiliate professor of chemical engineering from 1991 to 1994 and chair of the Department of chemical engineering from 1994 to 1999. Jan Sengers served as director of the Chemical Physics Program from 1978 to 1985 and as chair of the Burgers Program for Fluid Dynamics from 2003 to 2006. He was also affiliate professor of mechanical engineering from 1996 to 1999 and from 2002 to 2021. Jan Sengers became distinguished university research professor Emeritus in 1999 and served as a Research Professor in IPST from 2000 to 2021. While at the University of Maryland he also remained affiliated with NBS/NIST, first on an intermittent basis from 1968 to 2001 and subsequently as a guest researcher from 2001 to 2022.

Research At the Van der Waals Laboratory in Amsterdam, Jan Sengers performed some breakthrough experiments showing that the thermal conductivity of a fluid diverges at the critical point. After his arrival in the US, he was the first to obtain some rigorous results concerning the density corrections beyond the dilute-gas limit for the transport properties of a gas of hard spheres. At the University of Maryland, Jan Sengers was for many years the leader of a research group studying critical phenomena both experimentally and theoretically, establishing the principle of critical universality for equilibrium and nonequilibrium critical phenomena. His group also developed a theory for the crossover form asymptotic critical behavior of thermodynamic and transport properties to classical behavior far away from the critical point. Mikhail Anisimov joined the research group at the University of Maryland in 1994 and together Sengers and Anisimov further developed the crossover theory for critical phenomena, including crossover from Ising-like critical behavior to triple-point behavior of polymer solutions. The research group of Jan Sengers also demonstrated experimentally the long-range nature of thermal fluctuations in liquids in thermal nonequilibrium states. These nonequilibrium fluctuations will produce giant nonequilibrium Casimir pressures in soft condensed matter as predicted by Ted Kirkpatrick, Jose Ortiz de Zárate, and Jan Sengers. Jan Sengers has also been active in the standardization of transport properties of water and steam for the International Association for the Properties of Water and Steam and in the development of correlations for the transport properties of fluids as part of research projects of IUPAC and of the International Association for Transport Properties.

Awards and honors Correspondent of the Royal Netherlands Academy of Sciences (1980) Touloukian Award of American Society of Mechanical Engineers (1991) Doctor Honoris Causa, Technical University Delft (1992) Distinguished University Professor, University of Maryland (1997) Academician Emeritus of the International Academy of Refrigeration of the Russian Federation (2002) Fellow of American Institute of Chemical Engineers, American Society of Mechanical Engineers, American Physical Society, American Association for the Advancement of Science, International Association for the Properties of Water and Steam, International Union of Pure and Applied Chemistry, World Innovation Foundation

Personal life Jan Sengers married physicist Anneke Levelt Sengers; their four children include computer scientist and ethnographer Phoebe Sengers.

References

External links Jan V. Sengers publications indexed by Google Scholar Mesothermal Group Home Page

Worked examples

Example 1 — a first encounter with Jan V. Sengers

Start with the simplest possible case. Write down what Jan V. Sengers 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 Jan V. Sengers 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 V. Sengers 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 V. Sengers

In research: Jan V. Sengers 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 Jan V. Sengers 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 V. Sengers is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1931 births, 20th-century Dutch physicists, 21st-century American physicists, so understanding it makes those chapters shorter.
In everyday life: Look for Jan V. Sengers 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 V. Sengers in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Jan V. Sengers 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 Jan V. Sengers in simple terms?

Why does Jan V. Sengers 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 Jan V. Sengers?

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 V. Sengers.