astronomy

Stéphane Javelle

Stéphane Javelle 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 Stéphane Javelle rather than just read about it. In short: Stéphane Javelle (Lyon, 16 November 1864 – 3 August 1917) was a French astronomer. Since 1888 he worked assisting Henri Perrotin at the Nice Observatory, and observed 1431 objects published in the Index Catalogue.

Key takeaways

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

Reference excerpt

Stéphane Javelle (Lyon, 16 November 1864 – 3 August 1917) was a French astronomer. Since 1888 he worked assisting Henri Perrotin at the Nice Observatory, and observed 1431 objects published in the Index Catalogue. He initially worked as an accountant before his employer's friend, Louis Thollon recommended him to Perrotin. He was awarded the Valz Prize in 1910 by the French Academy of Sciences.

References

External links Stéphane Javelle @ Wolfgang Steinicke's website S. Javelle @ Astrophysics Data System

Illustrations

Worked examples

Example 1 — a first encounter with Stéphane Javelle

Start with the simplest possible case. Write down what Stéphane Javelle 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 Stéphane Javelle 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 Stéphane Javelle 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 Stéphane Javelle

In research: Stéphane Javelle 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 Stéphane Javelle 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: Stéphane Javelle is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1864 births, 1917 deaths, 19th-century French astronomers, so understanding it makes those chapters shorter.
In everyday life: Look for Stéphane Javelle 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Stéphane Javelle” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Stéphane Javelle in 20 minutes

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

Frequently asked questions

What is Stéphane Javelle in simple terms?

Why does Stéphane Javelle 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 Stéphane Javelle?

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 Stéphane Javelle.