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astronomy

George F. R. Ellis

George F. R. Ellis 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 George F. R. Ellis rather than just read about it. In short: George Francis Rayner Ellis, FRS, Hon. FRSSAf (born 11 August 1939), is the emeritus distinguished professor of complex systems in the Department of Mathematics and Applied Mathematics at the University of Cape Town in South Africa.

George F. R. Ellis — main illustration
George F. R. Ellis — illustration

Key takeaways

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

Reference excerpt

George Francis Rayner Ellis, FRS, Hon. FRSSAf (born 11 August 1939), is the emeritus distinguished professor of complex systems in the Department of Mathematics and Applied Mathematics at the University of Cape Town in South Africa. He co-authored The Large Scale Structure of Space-Time with University of Cambridge physicist Stephen Hawking, published in 1973, and is considered one of the world's leading theorists in cosmology. From 1989 to 1992 he served as president of the International Society on General Relativity and Gravitation. He is a past president of the International Society for Science and Religion. He is an A-rated researcher with the NRF. Ellis, an active Quaker, was a vocal opponent of apartheid during the National Party reign in the 1970s and 1980s, and it is during this period that Ellis's research focused on the more philosophical aspects of cosmology, for which he won the Templeton Prize in 2004. He was also awarded the Order of the Star of South Africa by Nelson Mandela in 1999. On 18 May 2007, he was elected a fellow of the British Royal Society.

Life Born in 1939 to George Rayner Ellis, a newspaper editor, and Gwendoline Hilda MacRobert Ellis in Johannesburg, George Francis Rayner Ellis attended the University of Cape Town, where he graduated with honours in 1960 with a Bachelor of Science degree in physics with distinction. He represented the university in fencing, rowing and flying. While a student at St John's College, Cambridge, where he received a PhD in applied maths and theoretical physics in 1964, he was on college rowing teams. At Cambridge, Ellis served as a research fellow from 1965 to 1967, was assistant lecturer in the Department of Applied Mathematics and Theoretical Physics until 1970, and was then appointed university lecturer, serving until 1974. Ellis became a visiting professor at the Enrico Fermi Institute at the University of Chicago in 1970, a lecturer at the Cargese Summer School in Corsica in 1971 and the Erice Summer School in Sicily in 1972, and a visiting H3 professor at the University of Hamburg, also in 1972. The following year, Ellis co-wrote The Large Scale Structure of Space-Time with Stephen Hawking, debuting at a strategic moment in the development of General Relativity Theory. In the following year, Ellis returned to South Africa to accept an appointment as professor of applied mathematics at the University of Cape Town, a position he held until his retirement in 2005. In 2005 Ellis appeared as a guest speaker at the Nobel Conference in St. Peter, Minnesota.

Work George Ellis has worked for many decades on anisotropic cosmologies (Bianchi models) and inhomogeneous universes, and on the philosophy of cosmology. He is currently writing on the emergence of complexity, and the way this is enabled by top-down causation in the hierarchy of complexity. Ellis has also collaborated with Teppo Felin, Denis Noble, and Jan Koenderink on a set of articles published in the journal Genome Biology in 2021. In terms of philosophy of science, Ellis is a Platonist.

Publications

Books

Papers Ellis has over 500 published articles; including 17 in Nature. Notable papers include:

Honours In 2019 Rhodes University in Grahamstown announced that it would award Ellis an honorary doctorate in laws (LLD, hc).

See also List of science and religion scholars

Notes and references

External links

Partial list of Ellis' published papers George Ellis's web page Archived 3 February 2019 at the Wayback Machine Professor George Ellis: a man of many parts, Cape Argus, 18 March 2004 George Ellis's scientific work as listed at SPIRES Interview with George Ellis (Recorded June 2004) at the Wayback Machine (archived 1 April 2013) on Speaking of Faith with Krista Tippett (transcript Archived 30 December 2016 at the Wayback Machine) George Ellis extended interview with transcript for the 'Why Are We Here?' documentary series.

Illustrations

George F. R. Ellis illustration
George F. R. Ellis illustration

Worked examples

Example 1 — a first encounter with George F. R. Ellis

Start with the simplest possible case. Write down what George F. R. Ellis 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 George F. R. Ellis 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 George F. R. Ellis 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 George F. R. Ellis

In research
George F. R. Ellis 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 George F. R. Ellis 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
George F. R. Ellis is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1939 births, Academic staff of the University of Cape Town, Alumni of Michaelhouse, so understanding it makes those chapters shorter.
In everyday life
Look for George F. R. Ellis 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 George F. R. Ellis in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what George F. R. Ellis 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 George F. R. Ellis out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is George F. R. Ellis in simple terms?

George Francis Rayner Ellis, FRS, Hon. FRSSAf (born 11 August 1939), is the emeritus distinguished professor of complex systems in the Department of Mathematics and Applied Mathematics at the University of Cape Town in South Africa.

Why does George F. R. Ellis 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 George F. R. Ellis?

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 George F. R. Ellis.

Tags

  • 1939 births
  • Academic staff of the University of Cape Town
  • Alumni of Michaelhouse
  • Alumni of St John's College, Cambridge
  • Fellows of the Royal Society
  • Living people
  • Members of the International Society for Science and Religion
  • Philosophers of cosmology
  • Recipients of the Order of Mapungubwe
  • South African Christians
  • South African Quakers
  • South African cosmologists

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