astronomy

John E. Geake

John E. Geake 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 E. Geake rather than just read about it. In short: John Edward Geake (22 April 1925 – 3 June 1998) was a British astronomer, noted as a lunar scientist and scientific instrument designer. Career John Edward Geake was born on 22 April 1925 in Manchester, England.

Key takeaways

John E. Geake 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 E. Geake to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of John E. Geake from memory before moving on to harder problems.

Reference excerpt

John Edward Geake (22 April 1925 – 3 June 1998) was a British astronomer, noted as a lunar scientist and scientific instrument designer.

Career John Edward Geake was born on 22 April 1925 in Manchester, England. His postgraduate studies at the University of Manchester Institute of Science and Technology (UMIST) related to the study of astronomical spectra using a photoelectric photometer. His work parallelled that of W. Albert Hiltner's team in the United States; although at the time neither knew of the other's work, and their methods were different. This research, which was long before the days of space exploration, led to laboratory measurement of luminescence from meteorite samples, which could be compared with lunar luminescence in an attempt to determine the composition of the lunar surface. His expertise was recognised by both the American and the Soviet space agencies, both of whom allocated to him lunar samples for study. He was a NASA principal investigator, and an editor of Lunar Science Conference Proceedings. One of his focuses was in trying to gain information from the polarization of light scattered from the surfaces of solid bodies in the Solar System. This involved comparison of laboratory measurements on samples of known characteristics against astronomical observations. This led to analysis of data collected by the Pioneer 10 and Pioneer 11 spacecraft, targeted at Jupiter and Saturn. He became well known for this work, which was continued after his death by Tom Gehrels of the University of Arizona; where Geake had held the post of adjunct professor. Geake was also a fellow at the Royal Astronomical Society, and a member of the International Astronomical Union.

Refractometer inventions Geake invented the first linear direct-reading refractometer for liquids, which has since been used in many practical applications. He designed the "UMIST Refractometer" subsystem for the Cassini–Huygens probe, which reached Saturn's moon Titan after his death in 2004. He also invented a spectral differentiating refractometer.

Retirement and death Geake died on 3 June 1998 after retiring in 1992 with the title of reader. He had worked in UMIST physics department for 35 years, where he made major contributions including the founding of the Industrial Science Group, one of the earliest university-industry liaison groups.

Personal life In his private life, Geake was a devout member of Fourth Church of Christ, Scientist, Manchester, and a visiting chaplain at Strangeways Prison. He had two daughters with his wife, Mary. The archaeologist Helen Geake is his cousin.

Honours The main-belt asteroid 9298 Geake, discovered by Edward Bowell at Anderson Mesa Station in 1985, was named in his honour.

References

External links BAA Meeting at Manchester Metropolitan University April 1996 Obituary by Michael Woolfson Reflectance polarimetry of Callisto and the evolution of the Galilean, Jean-ClaudeMandeville, John E.Geake and Audouin Dollfus (1978) The Cassini-Huygens Mission – Acknowledgements, Google books (2013)

Worked examples

Example 1 — a first encounter with John E. Geake

Start with the simplest possible case. Write down what John E. Geake 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 E. Geake 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 E. Geake 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 E. Geake

In research: John E. Geake 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 E. Geake 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 E. Geake is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1925 births, 1998 deaths, 19th-century British inventors, so understanding it makes those chapters shorter.
In everyday life: Look for John E. Geake 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 E. Geake in 20 minutes

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

Frequently asked questions

What is John E. Geake in simple terms?

John Edward Geake (22 April 1925 – 3 June 1998) was a British astronomer, noted as a lunar scientist and scientific instrument designer. Career John Edward Geake was born on 22 April 1925 in Manchester, England.

Why does John E. Geake 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 E. Geake?

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 E. Geake.