astronomy

Olin Chaddock Wilson

Olin Chaddock Wilson 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 Olin Chaddock Wilson rather than just read about it. In short: Olin Chaddock Wilson (January 13, 1909 – July 13, 1994) was an American astronomer best known for his work as a stellar spectroscopist. Born in San Francisco, California as the son of a lawyer, Wilson showed an interest in physics at an early age.

Key takeaways

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

Reference excerpt

Olin Chaddock Wilson (January 13, 1909 – July 13, 1994) was an American astronomer best known for his work as a stellar spectroscopist. Born in San Francisco, California as the son of a lawyer, Wilson showed an interest in physics at an early age. He studied astronomy and physics at the University of California, Berkeley and wrote his first scientific paper in 1932 on the subject of the speed of light. He received his PhD from the California Institute of Technology in 1934. Wilson was a staff member of Mount Wilson Observatory (not named after Olin Wilson) for most of his research career where he studied stellar chromospheres. He was the first scientist to discover activity cycles, similar to the solar 11-year sunspot cycle, in other stars. In collaboration with Vainu Bappu, an Indian astronomer, he also showed that there was a correlation between the width of the Ca II lines in stellar spectra and the star's luminosity, the Wilson–Bappu effect. He gave the Henry Norris Russell Lectureship in 1977 and won the Bruce Medal in 1984.

References

External links National Academy of Sciences biography

Worked examples

Example 1 — a first encounter with Olin Chaddock Wilson

Start with the simplest possible case. Write down what Olin Chaddock Wilson 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 Olin Chaddock Wilson 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 Olin Chaddock Wilson 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 Olin Chaddock Wilson

In research: Olin Chaddock Wilson 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 Olin Chaddock Wilson 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: Olin Chaddock Wilson is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1909 births, 1994 deaths, American astronomer stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Olin Chaddock Wilson 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 Olin Chaddock Wilson in 20 minutes

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

Frequently asked questions

What is Olin Chaddock Wilson in simple terms?

Why does Olin Chaddock Wilson 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 Olin Chaddock Wilson?

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 Olin Chaddock Wilson.