astronomy

Guy Ourisson

Guy Ourisson 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 Guy Ourisson rather than just read about it. In short: Guy Henry Ourisson (March 26, 1926 – November 4, 2006) was a French chemist. He was a member of the Academy of Sciences where he was vice president and then became the president.

Key takeaways

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

Reference excerpt

Guy Henry Ourisson (March 26, 1926 – November 4, 2006) was a French chemist. He was a member of the Academy of Sciences where he was vice president and then became the president. Awarded the Ernest Guenther Award in 1972 and the Heinrich Wieland Prize in 1985.

Career In 1952 he obtained a PhD from Harvard University. In 1954 he obtained a doctorate in physics from the Sorbonne under the direction of G. Dupont. At the University of Strasbourg he was appointed lecturer in 1955, professor in 1958 and professor emeritus in 1995. He died, aged 80, in Strasbourg.

References

Bibliography http://www.education.gouv.fr/cid2032/desaffection-des-etudiants-pour-les-etudes-scientifiques.html

Worked examples

Example 1 — a first encounter with Guy Ourisson

Start with the simplest possible case. Write down what Guy Ourisson 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 Guy Ourisson 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 Guy Ourisson 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 Guy Ourisson

In research: Guy Ourisson 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 Guy Ourisson 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: Guy Ourisson is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1926 births, 2006 deaths, 20th-century French chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Guy Ourisson 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 Guy Ourisson in 20 minutes

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

Frequently asked questions

What is Guy Ourisson in simple terms?

Guy Henry Ourisson (March 26, 1926 – November 4, 2006) was a French chemist. He was a member of the Academy of Sciences where he was vice president and then became the president.

Why does Guy Ourisson 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 Guy Ourisson?

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 Guy Ourisson.