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Louville

Louville is a science 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 Louville rather than just read about it. In short: Louville is a lunar impact crater that is located on the western edge of the Sinus Roris, a bay in the northern part of the Oceanus Procellarum. It lies to the northwest of the crater Mairan, on a triangular section of continental terrain to the west of Sinus Iridum and the Mare Imbrium.

Louville — main illustration
Louville — illustration

Key takeaways

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

Reference excerpt

Louville is a lunar impact crater that is located on the western edge of the Sinus Roris, a bay in the northern part of the Oceanus Procellarum. It lies to the northwest of the crater Mairan, on a triangular section of continental terrain to the west of Sinus Iridum and the Mare Imbrium. This crater formation has been heavily eroded by impacts, to the point where the surface is somewhat difficult to distinguish from the surrounding rugged terrain to the east. It is now an irregular depression in the surface, with worn, uneven features. The small crater Louville B lies along the western rim, while Louville A lies just to the southeast. To the west across the lunar mare is a long, slender rille designated Rima Sharp. This follows a generally north–south route, beginning to the north-northwest of Louville and continuing until it terminates to the south-southwest. The total diameter of this formation is 107 km.

Satellite craters By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Louville.

Louville DA is a concentric (double-walled) crater.

References

Sources

Illustrations

Louville illustration
Louville: Rima Sharp and crater Louville with satellite features mosaic from the LRO. Unmarked on the bottom left: Louville ω hill (Louville Omega), nearest geological formation to the Chang'e 5 landing site.
Rima Sharp and crater Louville with satellite features mosaic from the LRO. Unmarked on the bottom left: Louville ω hill (Louville Omega), nearest geological formation to the Chang'e 5 landing site.

Worked examples

Example 1 — a first encounter with Louville

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

In research
Louville appears in science 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 Louville 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
Louville is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, LQ04 quadrangle, so understanding it makes those chapters shorter.
In everyday life
Look for Louville 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 Louville in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Louville means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Louville out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Louville in simple terms?

Louville is a lunar impact crater that is located on the western edge of the Sinus Roris, a bay in the northern part of the Oceanus Procellarum. It lies to the northwest of the crater Mairan, on a triangular section of continental terrain to the west of Sinus Iridum and the Mare Imbrium.

Why does Louville matter?

Because it connects several science 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 Louville?

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 Louville.

Tags

  • Impact craters on the Moon
  • LQ04 quadrangle

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