biology

Véronique Le Guen

Véronique Le Guen is a biology 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 Véronique Le Guen rather than just read about it. In short: Véronique Borel-Le Guen (16 July 1956 – 18 January 1990) was a French speleologist. She was born Véronique Borel in Saint-Maur-des-Fossés, in the southeastern suburbs of Paris.

Key takeaways

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

Reference excerpt

Véronique Borel-Le Guen (16 July 1956 – 18 January 1990) was a French speleologist. She was born Véronique Borel in Saint-Maur-des-Fossés, in the southeastern suburbs of Paris. Borel studied at Sciences Po before becoming the executive secretary in a publishing house. She married Francis Le Guen.

Career Le Guen became an expert cave diver, equipped with a diving suit and scuba set. She held the record for 47 hours of immersion in a sump in Australia. Because of her physical and mental strength, Le Guen was selected by speleologist Michel Siffre to participate in an underground isolation experiment without time stimuli to study the human circadian rhythm. The study was in collaboration with CNRS, CNES and CEA. On 10 August 1988, Le Guen descended to a depth of 82 metres into the Valat-Nègre sinkhole in the causse Noir, near Millau, in southwest France. She had radio contact with the surface, but no indication of time was communicated to her. She spent a total of 111 days in isolation, during which her sleeping-waking patterns quickly went out of phase with days above ground. Le Guen emerged on 29 November 1988. This study paved the way for a number of further isolation studies into biological rhythms and sleep cycles.

Death On 18 January 1990, fourteen months after the conclusion of the experiment Véronique Le Guen was found dead in her car parked on the rue du Pré-Saint-Gervais in the 19th arrondissement of Paris. She had taken a fatal dose of barbiturates.

Publications Seule au fond du gouffre, Arthaud, 1989. Curieux objets, étranges histoires (Flammarion, 2016) with Pierre Bellemare

Gallery

References

Illustrations

Worked examples

Example 1 — a first encounter with Véronique Le Guen

Start with the simplest possible case. Write down what Véronique Le Guen claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Véronique Le Guen 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 Véronique Le Guen 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 Véronique Le Guen

In research: Véronique Le Guen appears in biology 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 Véronique Le Guen 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: Véronique Le Guen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1956 births, 1990 deaths, 20th-century French scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Véronique Le Guen 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 Véronique Le Guen in 20 minutes

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

Frequently asked questions

What is Véronique Le Guen in simple terms?

Véronique Borel-Le Guen (16 July 1956 – 18 January 1990) was a French speleologist. She was born Véronique Borel in Saint-Maur-des-Fossés, in the southeastern suburbs of Paris.

Why does Véronique Le Guen matter?

Because it connects several biology 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 Véronique Le Guen?

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 Véronique Le Guen.