science

Pikelʹner (crater)

Pikelʹner (crater) 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 Pikelʹner (crater) rather than just read about it. In short: Pikelʹner is an impact crater on the Moon's far side, named for the Russian astronomer Solomon Pikelner. It lies to the southeast of the larger crater Van der Waals, and to the north of the Vallis Planck cleft.

Key takeaways

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

Reference excerpt

Pikelʹner is an impact crater on the Moon's far side, named for the Russian astronomer Solomon Pikelner. It lies to the southeast of the larger crater Van der Waals, and to the north of the Vallis Planck cleft. Pikelʹner overlies more than half of the satellite crater Pikelʹner Y to the north. Almost contacting the southwestern outer rim of Pikelʹner is a larger concentric crater formation with the smaller crater of the pair, Pikelʹner S, along the northern edge of the pair. The outer rim of Pikelʹner is well-defined with little erosion, giving it the appearance of a relatively young feature. The interior floor is somewhat uneven, possibly due to deposits of ejecta or fall-back material. It is free of impacts of note within the interior.

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 Pikelʹner.

References

Illustrations

Worked examples

Example 1 — a first encounter with Pikelʹner (crater)

Start with the simplest possible case. Write down what Pikelʹner (crater) 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 Pikelʹner (crater) 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 Pikelʹner (crater) 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 Pikelʹner (crater)

In research: Pikelʹner (crater) 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 Pikelʹner (crater) 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: Pikelʹner (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, LQ29 quadrangle, so understanding it makes those chapters shorter.
In everyday life: Look for Pikelʹner (crater) 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 Pikelʹner (crater) in 20 minutes

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

Frequently asked questions

What is Pikelʹner (crater) in simple terms?

Why does Pikelʹner (crater) 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 Pikelʹner (crater)?

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 Pikelʹner (crater).