astronomy

Peter Fellgett

Peter Fellgett 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 Peter Fellgett rather than just read about it. In short: Peter Berners Fellgett FRS, FIEE (11 April 1922 – 15 November 2008) was a British physicist. He was the professor of Cybernetics at the University of Reading .

Key takeaways

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

Reference excerpt

Peter Berners Fellgett FRS, FIEE (11 April 1922 – 15 November 2008) was a British physicist. He was the professor of Cybernetics at the University of Reading .

Fellgett's advantage He is best known for Fellgett's advantage: the improvement of the signal-to-noise ratio by using multiplex measurements, i.e. simultaneous measurement at different wavelengths, such as Fourier transform spectroscopy. This work emerged from his 1949 dissertation (Theory of Infra-Red Sensitivities and Its Application to Investigations of Stellar Radiation in the Near Infra-Red) while at the University of Cambridge.

Royal Observatory Edinburgh From Cambridge he moved to the Royal Observatory Edinburgh where he continued his interests in instrument science.

University of Reading In 1964, he moved to the University of Reading where he became professor of Cybernetics and Instrument Physics. While at Reading he was involved on research in Ambisonics (with Michael Gerzon), as well as continuing his interest in instrumentation. He retired in 1987. His Professorship (in Cybernetics) was taken over by Kevin Warwick.

Awards He received the R. W. Wood Prize in 1977, became a fellow of the Royal Society of Edinburgh in 1961 and a fellow of the Royal Society in 1986. He was an Honorary Fellow of the Cybernetics Society.

References

External links Obituary by Richard Mitchell Obituary by the Royal Society

Worked examples

Example 1 — a first encounter with Peter Fellgett

Start with the simplest possible case. Write down what Peter Fellgett 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 Peter Fellgett 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 Peter Fellgett 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 Peter Fellgett

In research: Peter Fellgett 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 Peter Fellgett 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: Peter Fellgett is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1922 births, 2008 deaths, Academics of the University of Reading, so understanding it makes those chapters shorter.
In everyday life: Look for Peter Fellgett 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 Peter Fellgett in 20 minutes

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

Frequently asked questions

What is Peter Fellgett in simple terms?

Peter Berners Fellgett FRS, FIEE (11 April 1922 – 15 November 2008) was a British physicist. He was the professor of Cybernetics at the University of Reading .

Why does Peter Fellgett 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 Peter Fellgett?

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 Peter Fellgett.