science

Von Neumann (crater)

Von Neumann (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 Von Neumann (crater) rather than just read about it. In short: Von Neumann is a lunar impact crater that lies on the far side of the Moon, in the northern hemisphere, named after polymath John von Neumann. It is nearly attached to the south-southeastern rim of the walled plain named Campbell.

Key takeaways

Von Neumann (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 Von Neumann (crater) to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Von Neumann (crater) from memory before moving on to harder problems.

Reference excerpt

Von Neumann is a lunar impact crater that lies on the far side of the Moon, in the northern hemisphere, named after polymath John von Neumann. It is nearly attached to the south-southeastern rim of the walled plain named Campbell. The crater Ley is attached to the northeastern rim of Von Neumann, and is somewhat overlain by the outer rampart. To the west is the prominent Wiener, and to the south-southwest is Nikolayev. This formation dates to the Late Imbrian epoch of the lunar geologic timescale. It has a wide inner wall with multiple terraces. The width of the inner wall varies around the perimeter, with the widest section to the south. There is some slumping along the inner wall to the northwest where the rim makes its closest approach to Campbell, and the narrow terrain between these two craters is rugged and irregular. But the remaining terrain that surrounds the crater is almost equally rugged. The rim appears somewhat straighter along the southwest side, but is roughly circular elsewhere. The interior floor is nearly flat and level along the western side. There is a small range of ridges running from the south to the northern edge of the floor, and the ground is more irregular in the eastern half. There are no significant impacts within the crater interior and the sides are generally unworn. Prior to formal naming by the IAU in 1970, Von Neumann was called Crater 58.

References

Sources

Illustrations

Worked examples

Example 1 — a first encounter with Von Neumann (crater)

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

In research: Von Neumann (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 Von Neumann (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: Von Neumann (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, John von Neumann, LQ07 quadrangle, so understanding it makes those chapters shorter.
In everyday life: Look for Von Neumann (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 Von Neumann (crater) in 20 minutes

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

Frequently asked questions

What is Von Neumann (crater) in simple terms?

Why does Von Neumann (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 Von Neumann (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 Von Neumann (crater).