chemistry

Laurent Charlet

Laurent Charlet is a chemistry 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 Laurent Charlet rather than just read about it. In short: Laurent Charlet (born 1955 in Paris, France) is a French environmental molecular geochemist working at the Institute of Earth Science within the University of Grenoble-Alpes (France). In 2007, he was appointed Distinguished Professor to reflect his major scientific achievements.

Key takeaways

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

Reference excerpt

Laurent Charlet (born 1955 in Paris, France) is a French environmental molecular geochemist working at the Institute of Earth Science within the University of Grenoble-Alpes (France). In 2007, he was appointed Distinguished Professor to reflect his major scientific achievements. He holds several adjunct or affiliated positions at the Lawrence Berkeley Laboratory (USA), the University of Swansea (Honorary Chair, UK) and the University of Waterloo (Canada). His research interests aim to advance our scientific knowledge for protecting our natural resources like healthy soils and clean water, using subsurface resources responsibly, and developing strategies for resilience in a changing world.

Early life and education Laurent Charlet was born in Paris within a family of artists (painters, architects, sculptors). He attended a Montessori-like school (Ecole Alsacienne) where he was encouraged to develop an independent thinking. Through his parents, Dr. Charlet cultivated a strong interest for the humanities, his father's favorite field, but also for the science thanks to his mother, who was among the first women to earn an architecture DPLG diploma in France. Dr. Charlet studied at the most prestigious French institutions for his high school and bachelor-lie degree in mathematics and biology (Louis Le Grand, Saint Louis and Henri IV). Later on, he earned a Master in Agronomy Engineering at Agrocampus (Agronomy Institutes), with a specialization in Mediterranean and Desert Agronomy. Concomitantly, he kept practicing music & modern dance Because of his engineering training, Dr. Charlet has always kept a keen interest for working on environmental issues of worldwide societal and health importance, applying a molecular approach to decipher processes occurring at macro scale. In 1981, Dr Charlet moved to California, USA with a 6-month scholarship at the University of California – Riverside to work under the supervision of Dr. Garrison Sposito. Fascinated by his experience, he decided to stay within the research group of Dr. Sposito to earn a M.S. and a Ph.D. in Soil and Environmental Sciences. Sposito taught him how to conceptualize in a mathematic framework any natural process. His M.S research project examined the sorption of the CaCl+ ion pair on clay and its detrimental impact on soil stability in desert agriculture. His Ph.D. project focused on surface chemistry of Amazonia soils exposed to intensive agricultural stress. In 1986, Dr. Charlet moved back to Europe to work as a postdoctoral research scholar at the Swiss Federal Institute of Aquatic Science and Engineering (EAWAG) within Dr. Werner Stumm's research group. He completed a second postdoc at the University of Bern within Dr. Paul Schindler's research group. While living in Bern, Dr Charlet met and married Dr. Barbara Dehn, a German biologist. They have two children, Alvaro and Anaïs.

Scientific position and Awards Laurent Charlet became a full professor at the age of 35 while the European Synchrotron Research Facility (ESRF) was under construction in Grenoble. His work involved research at different scales: (i) large scale multidisciplinary field investigations and (ii) molecular level investigations at synchrotron facilities with a special focus on the redox surface chemistry of nanoparticles, particularly for oxyanion trace elements and their importance in human health, origin of life and environmental safety. In 2007 Dr. Charlet was awarded the CNRS Silver Medal for Excellence in Research. He was given visiting professor positions at UC-Berkeley (US), EPFL-Lausanne (Switzerland), and Uni. Utrecht (The Netherlands). Honorary member of the Institut Universitaire de France, he was for 10-years both Editor in Chief of Journal of Hydrology and International Research advisor to UGA Chancellor. He heads since 2018 the International Medical Geology Association French Chapter. He also interacts with archeologists and has been till 2009 member of the Lascaux UNESCO Heritage scientific committee.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Laurent Charlet

Start with the simplest possible case. Write down what Laurent Charlet claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Laurent Charlet 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 Laurent Charlet 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 Laurent Charlet

In research: Laurent Charlet appears in chemistry 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 Laurent Charlet 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: Laurent Charlet is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1955 births, French geochemists, Living people, so understanding it makes those chapters shorter.
In everyday life: Look for Laurent Charlet 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 Laurent Charlet in 20 minutes

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

Frequently asked questions

What is Laurent Charlet in simple terms?

Why does Laurent Charlet matter?

Because it connects several chemistry 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 Laurent Charlet?

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 Laurent Charlet.