science

Millikan (crater)

Millikan (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 Millikan (crater) rather than just read about it. In short: Millikan is a lunar impact crater in the northern hemisphere of the Moon's far side. It is located to the north of the crater H.

Key takeaways

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

Reference excerpt

Millikan is a lunar impact crater in the northern hemisphere of the Moon's far side. It is located to the north of the crater H. G. Wells, and to the southwest of von Békésy. This formation dates to the Nectarian epoch of the lunar geologic timescale. The rim edge of Millikan is roughly circular and well-defined, but with some irregularities. There are some small outward bulges along the south and east where the edge has slumped inwards somewhat. The inner walls lacks a terrace structure that is seen, for example, in the smaller Cantor to the south. The interior floor of Millikan is relatively level, and there is a small, bowl-shaped crater to the north of the midpoint. Offset to the west of the middle is a low central peak. The floor is marked by a number of tiny craterlets. Prior to formal naming by the IAU in 1970, Millikan was called Crater 47.

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 Millikan.

References

Sources

Illustrations

Worked examples

Example 1 — a first encounter with Millikan (crater)

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

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

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

Frequently asked questions

What is Millikan (crater) in simple terms?

Millikan is a lunar impact crater in the northern hemisphere of the Moon's far side. It is located to the north of the crater H.

Why does Millikan (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 Millikan (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 Millikan (crater).