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Roy McWeeny

Roy McWeeny 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 Roy McWeeny rather than just read about it. In short: Roy McWeeny (19 May 1924 – 29 April 2021) was a British academic physicist and chemist. McWeeny was born in Bradford, Yorkshire in May 1924.

Key takeaways

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

Reference excerpt

Roy McWeeny (19 May 1924 – 29 April 2021) was a British academic physicist and chemist. McWeeny was born in Bradford, Yorkshire in May 1924. His first degree was in physics from the University of Leeds. He then obtained a D.Phil. in mathematical physics and quantum theory under the supervision of Charles Coulson at the Mathematical Institute, University of Oxford. From 1948 to 1957 he was lecturer in physical chemistry at King's College, University of Durham (King's College is now the University of Newcastle upon Tyne). From 1957 to 1965 he was at the University of Keele rising to Professor of Theoretical Physics and Theoretical Chemistry. From 1966 to 1982 he was Professor of Theoretical Chemistry at the University of Sheffield. In 1982 he moved to the University of Pisa, Italy where he remained an Emeritus Professor until his death. In 1996 a celebratory festschrift volume was published in his honour containing original papers by 132 scientists from 19 countries. He was awarded the 2006 Spiers Memorial Medal by the Faraday Division of the Royal Society of Chemistry and the Medal Lecture, "Quantum chemistry: The first seventy years", was published in Faraday Discussions. He has served on the editorial board of Molecular Physics, Chemical Physics Letters and International Journal of Quantum Chemistry. He has written many scientific papers and seven books, of which perhaps the best known are Coulson's Valence in 1979, an update of the famous book by Charles Coulson originally written in 1951, and the two editions of Methods of Molecular Quantum Mechanics, (the first edition with B. T. Sutcliffe in 1969 and the second edition alone in 1989). He wrote several chapters in the three volumes of the Handbook of Molecular Physics and Quantum Chemistry. In 1963 he wrote Symmetry: an introduction to group theory and its applications. From 2002 he edited an open-access series of Basic Books in Science, several of which he authored himself. He was also an elected member of the International Academy of Quantum Molecular Science and the European Academy of Arts, Sciences and the Humanities. McWeeny died in Pisa, Italy in April 2021 at the age of 96.

References His International Academy of Quantum Molecular Science page

External links Interview at Early Ideas in the History of Quantum Chemistry. Involvement with Learning Development Institute His Learning Development Institute resume International Journal of Quantum Chemistry, (1996), Volume 60, 3. His autobiography.

Worked examples

Example 1 — a first encounter with Roy McWeeny

Start with the simplest possible case. Write down what Roy McWeeny 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 Roy McWeeny 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 Roy McWeeny 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 Roy McWeeny

In research
Roy McWeeny 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 Roy McWeeny 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
Roy McWeeny is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1924 births, 2021 deaths, Alumni of University College, Oxford, so understanding it makes those chapters shorter.
In everyday life
Look for Roy McWeeny 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 Roy McWeeny in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Roy McWeeny means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Roy McWeeny out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Roy McWeeny in simple terms?

Roy McWeeny (19 May 1924 – 29 April 2021) was a British academic physicist and chemist. McWeeny was born in Bradford, Yorkshire in May 1924.

Why does Roy McWeeny 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 Roy McWeeny?

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 Roy McWeeny.

Tags

  • 1924 births
  • 2021 deaths
  • Alumni of University College, Oxford
  • Alumni of the University of Leeds
  • British physical chemists
  • Chemists of Durham University
  • Chemists of Keele University
  • Chemists of Newcastle University
  • Chemists of the University of Sheffield
  • Members of the International Academy of Quantum Molecular Science
  • People from Bradford
  • Theoretical chemists

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