astronomy

John Twidell

John Twidell 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 John Twidell rather than just read about it. In short: John Twidell is a former director of the AMSET Centre Ltd. and a visiting lecturer at the Environmental Change Institute, University of Oxford, and the School of Aeronautics and Engineering, City University, London. He was Editor of the academic journal Wind Engineering.

Key takeaways

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

Reference excerpt

John Twidell is a former director of the AMSET Centre Ltd. and a visiting lecturer at the Environmental Change Institute, University of Oxford, and the School of Aeronautics and Engineering, City University, London. He was Editor of the academic journal Wind Engineering. He co-edited the 2009 book Offshore Wind Power. Professor Twidell previously held the Chair in Renewable Energy at De Montfort University and was Director of the Energy Studies Unit of Strathclyde University. He served on the Boards of the British Wind Energy Association (now RenewableUK) and the UK Solar Energy Society, on committees of the Institute of Physics and as an adviser to the UK Parliamentary Select Committee on Energy. He has been a long-standing champion of wind energy.

Select bibliography Twidell, John; Weir, Tony (24 November 2005). Renewable Energy Resources (Second ed.). Taylor & Francis. ISBN 978-0-419-25320-4. Twidell, John (2022). Renewable Energy Resources (Fourth ed.). Routledge. ISBN 978-1-138-32226-4.

References

Worked examples

Example 1 — a first encounter with John Twidell

Start with the simplest possible case. Write down what John Twidell 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 John Twidell 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 John Twidell 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 John Twidell

In research: John Twidell 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 John Twidell 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: John Twidell is common in secondary-school and first-year university syllabi. It links to neighbouring topics Academics of City, University of London, Academics of De Montfort University, Academics of the University of Oxford, so understanding it makes those chapters shorter.
In everyday life: Look for John Twidell 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 John Twidell in 20 minutes

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

Frequently asked questions

What is John Twidell in simple terms?

Why does John Twidell 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 John Twidell?

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 John Twidell.