astronomy

Jacques Buot

Jacques Buot 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 Jacques Buot rather than just read about it. In short: Jacques Bu[h]ot (before 1623 – January 1678) was a French mathematician, engineer, physicist, and astronomer. He worked on the constructions of forts and compiled a mathematics textbook apart from being one of the first seven mathematician members of the Royal Academy of Sciences.

Key takeaways

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

Reference excerpt

Jacques Bu[h]ot (before 1623 – January 1678) was a French mathematician, engineer, physicist, and astronomer. He worked on the constructions of forts and compiled a mathematics textbook apart from being one of the first seven mathematician members of the Royal Academy of Sciences. Buot was born in L’Aigle, Orne, and nothing is known of his early life. He worked as a gunsmith early in life. He then worked in Paris as an engineer in the forts along with Pierre Petit and Jean Ballesdens. While in Paris he wrote on the use of proportional wheels in 1647, published by Melchoir Mondière. He was then appointed ordinary royal engineer from around 1648. He made observations on the solar eclipse of 8 April 1652 along with Jacques-Alexandre le Tenneur and Adrien Auzout. He made a chart of sky for the King which includes the 1665 comet that he observed along with Adrien Auzout. He constructed a sundial in the royal library as well as at the castle of Saint-Germain-en-Laye. In 1666 he was among the first seven mathematicians included in the Royal Academy of Sciences. He examined the inclination of Saturn's rings in 1667. Along with Cassini and other he observed the Great Red Spot on Jupiter and determined the period of Jupiter's rotation as 9 hours and 56 minutes. He devised an azimuthal square that would help identify the longitude without the need for measurements at noon which was later constructed along with Claude Antoine Couplet who also married Buot's step daughter Marie Baillot. He married Simone Rousseau on November 11, 1655. He is thought to have died around January 1678 since Philippe de la Hire was appointed as his substitute at the Academy.

References

External links Buot's introduction to mathematics

Worked examples

Example 1 — a first encounter with Jacques Buot

Start with the simplest possible case. Write down what Jacques Buot 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 Jacques Buot 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 Jacques Buot 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 Jacques Buot

In research: Jacques Buot 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 Jacques Buot 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: Jacques Buot is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1600s births, 1678 deaths, French astronomers, so understanding it makes those chapters shorter.
In everyday life: Look for Jacques Buot 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 Jacques Buot in 20 minutes

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

Frequently asked questions

What is Jacques Buot in simple terms?

Why does Jacques Buot 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 Jacques Buot?

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 Jacques Buot.