astronomy

Leah B. Allen

Leah B. Allen 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 Leah B. Allen rather than just read about it. In short: Leah Brown Allen (November 6, 1884 – 1979) was an American astronomer. Allen was Professor of Astronomy and Director of Williams Observatory at Hood College.

Key takeaways

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

Reference excerpt

Leah Brown Allen (November 6, 1884 – 1979) was an American astronomer. Allen was Professor of Astronomy and Director of Williams Observatory at Hood College.

Education and career She attended Hope High School in Providence, graduating in 1903. She then studied at Pembroke College in Brown University, starting later that same year, where she did special work in astronomy under Professor Winslow Upton, director of Ladd Observatory. She received an A.B. degree in 1907. Allen joined Lick Observatory as Carnegie Assistant from September 1907 to June 1908 after a recommendation by Upton. At Lick her work as a computer involved "...duties in the measurement and reduction of spectrograms." In 1910 she became an assistant in astronomy at Wellesley College. She received her M.A. from Wellesley in 1912. Her thesis was a spectroscopic study of the star Eta Centauri. Allen participated in Lick Observatory's Crocker expedition to view the total solar eclipse of June 8, 1918 at Goldendale, Washington. She was an assistant professor of astronomy at Wellesley, along with astronomy instructor Lois Tripp Slocum, in the 1920s. She was affiliated with the Whitin Observatory at Wellesley. Allen began teaching astronomy at Hood in 1927. At Hood she was director of the John H. Williams Observatory. She gave lectures to amateur astronomy groups. She retired from teaching in 1955. Allen died in 1979.

Personal life Allen was the daughter of Samuel F. Allen, who had been described as a "veteran balloonist." Her mother was Abby Lydia Allen, née Willey. She enjoyed sailing from the time that she was in college. Her sister considered her an expert at handling her sailboat in inclement weather. She became active in the women's suffrage movement after reading a speech by her sister, called “Why Women Should Be Given the Vote.” She was an advocate of voting rights, and played a role in earning women the right to vote in Rhode Island.

Honors and memberships This prize is named in her honor:

Leah B. Allen Award for work in astronomy or mathematics, Hood College Allen was a member of the following societies:

American Astronomical Society American Association of Variable Star Observers, Charter Member

Correspondents Annie Jump Cannon William F. Meggers

Publications

Notes

References

Illustrations

Worked examples

Example 1 — a first encounter with Leah B. Allen

Start with the simplest possible case. Write down what Leah B. Allen 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 Leah B. Allen 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 Leah B. Allen 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 Leah B. Allen

In research: Leah B. Allen 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 Leah B. Allen 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: Leah B. Allen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1884 births, 1973 deaths, 20th-century American astronomers, so understanding it makes those chapters shorter.
In everyday life: Look for Leah B. Allen 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 Leah B. Allen in 20 minutes

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

Frequently asked questions

What is Leah B. Allen in simple terms?

Leah Brown Allen (November 6, 1884 – 1979) was an American astronomer. Allen was Professor of Astronomy and Director of Williams Observatory at Hood College.

Why does Leah B. Allen 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 Leah B. Allen?

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 Leah B. Allen.