engineering

Pierre-Marie Touboulic

Pierre-Marie Touboulic is a engineering 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 Pierre-Marie Touboulic rather than just read about it. In short: Pierre-Marie Touboulic (17 June 1783, Brest, France - 8 June 1859 Paris) was a naval engineer, inventor and writer. Biography Pierre-Marie Touboulic was born in Brest on 17 June 1783.

Key takeaways

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

Reference excerpt

Pierre-Marie Touboulic (17 June 1783, Brest, France - 8 June 1859 Paris) was a naval engineer, inventor and writer.

Biography Pierre-Marie Touboulic was born in Brest on 17 June 1783. He was the fifth of six children of master locksmith Jean-Louis Touboulic and Marie Félicité Abalain. His first wife was Hortense Auvray, married on 17 June 1818 in Brest, with whom he had a daughter Hortense Félicité Claudine , born 26 April 1819. He married a second time to Jeanne Augustine Le Donné on 16 May 1825, and a third time to Marie Guillemette Querné on 13 January 1836, both also in Brest. He was the brother of Toussaint Touboulic, knight of the Order of Saint Louis, and captain of a frigate. The son of one of his cousins, Perrine Jeanne Adélaïde Touboulic, born 11 July 1780 in Lorient, was Louis Maurice Adolphe Linant de Bellefonds, born 23 November 1799. He was made an Knight of the Legion of Honour in 1825, and died in Paris on 8 June 1859 at 6 rue de Castiglione in the 1st arrondissement.

Career Touboulic spent his entire working life in Brest. Appointed marine engineer in 1818, he was head of the compass workshop from 1825 to 1836, and later mechanical engineer. He built models of the ports of Brest, Lorient and Toulon, and a relief map of Rochefort, and invented tools used by various sectors of the navy including a variation compass in 1856 (patent of invention code 26642 at the INPI), a diving bell (departmental archives of Finistère, code 4 T 5), an aerial transport system that he called a velocipost in 1808 (patent number 1BA6239 at the INPI), the ancestor of the first urban cable car, before the railways, in 1838, which was first tested from 3 to 12 October 1838 in the Bois de Bordenave in Brest. The experiment was continued in 1839 for at least three months on the ramparts of Fort Bouguen with the participation of about 800 people. The press of the time (Armoricain) suggested possible uses for transport of convicts, the sick, etc. The Brest cable car was called the Touboulic Express by the city of Brest in 2014. Touboulic took out a patent on a rebreather, based on the absorption of carbon dioxide on 17 June 1808. It had a tank containing oxygen which was released by the diver, and circulated in a closed circuit through a sponge soaked in lime water. Touboulic called his invention Ichtioandre (Greek for "fish-man"). In 1834, he experimented with submarines on the Loire.

References

Bibliography Touboulicp, P. (1817). Scolegigraphie, ou Méthode prompte, perfectionnée et économique pour l'enseignement simultané de la lecture et de l'écriture... [Scolegigraphie, or Prompt, perfected and economical method for the simultaneous teaching of reading and writing...(Notice on some inventions of M. Touboulic.) (in French). Michel. p. 26. Locquin, F. (1839). Véloposte, ou Chemin Touboulic (in French). p. 15.

Worked examples

Example 1 — a first encounter with Pierre-Marie Touboulic

Start with the simplest possible case. Write down what Pierre-Marie Touboulic claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, 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 Pierre-Marie Touboulic 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 Pierre-Marie Touboulic 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 Pierre-Marie Touboulic

In research: Pierre-Marie Touboulic appears in engineering 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 Pierre-Marie Touboulic 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: Pierre-Marie Touboulic is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1783 births, 1859 deaths, 19th-century French engineers, so understanding it makes those chapters shorter.
In everyday life: Look for Pierre-Marie Touboulic 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 Pierre-Marie Touboulic in 20 minutes

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

Frequently asked questions

What is Pierre-Marie Touboulic in simple terms?

Pierre-Marie Touboulic (17 June 1783, Brest, France - 8 June 1859 Paris) was a naval engineer, inventor and writer. Biography Pierre-Marie Touboulic was born in Brest on 17 June 1783.

Why does Pierre-Marie Touboulic matter?

Because it connects several engineering 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 Pierre-Marie Touboulic?

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 Pierre-Marie Touboulic.