astronomy

Isabel Martin Lewis

Isabel Martin Lewis 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 Isabel Martin Lewis rather than just read about it. In short: Isabel Martin Lewis (July 11, 1881 – July 31, 1966) was an American astronomer who was the first woman hired by the United States Naval Observatory as assistant astronomer. In 1918, Lewis was elected a member of the American Astronomical Society.

Key takeaways

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

Reference excerpt

Isabel Martin Lewis (July 11, 1881 – July 31, 1966) was an American astronomer who was the first woman hired by the United States Naval Observatory as assistant astronomer. In 1918, Lewis was elected a member of the American Astronomical Society. She was also a member of the Royal Astronomical Society of Canada and the Astronomical Society of the Pacific.

Early life Isabel Eleanor Martin was born in Old Orchard Beach, Maine, on July 11, 1881. Lewis earned her A.B. from Cornell University in 1903 and earned her A.M. there in 1905, specializing in mathematics. From 1905 to 1907 she was an "astronomical computer" for Simon Newcomb. Under Newcomb, Martin worked on eclipse data, an experience that would prove essential to her later work. Lewis began work as a computer at the Nautical Almanac Office in 1908. Although Lewis was not the first woman to be hired by the Naval Observatory (this was Maria Mitchell, who in 1849 was hired as a computer), Lewis was the first woman to be hired as assistant astronomer. At the NAO, Lewis met her husband, Clifford Spencer Lewis, another astronomer. They were married on December 4, 1912.

Popularization of science With the birth of her son, Raymond Winslow Lewis, Lewis worked only part-time at the observatory and began an effort to popularize science. Writing three books and countless articles, Lewis started in 1916 to reach out to a popular audience about the wonders of astronomy and earth science. Her columns appeared in the New York Evening Sun, the Electrical Experimenter (later known as Science and Invention), Popular Astronomy, The Scientific Monthly, and the Astronomical Journal, among others. For thirty years, Lewis had a monthly column in Nature Magazine (this title was published by the American Nature Association and should not be confused with the journal Nature). Introducing her first article in Electrical Experimenter, editor Hugo Gernsback praised Lewis for her exactitude and learning, saying that she "has the rare faculty of interpreting difficult and dry subjects in a popular manner." This article, "Popular Astronomy: Dark Stars", was the first published in the magazine from a female writer. The articles from the Sun were combined into a 1919 book, Splendors of the Sky, and her articles before 1922 in Science and Invention were included in the second part of her book Astronomy for Young Folks. In addition, in "News of the Stars" she gave lectures on the local radio station (WRC) and made presentations at schools and churches.

Return to full-time work Lewis returned to full-time work after her husband's death in 1927. On October 1, 1927 Lewis was promoted to Assistant Scientist. Lewis was further promoted to the rank of Astronomer in 1930. A specialist in eclipses, at the Naval Observatory Lewis derived a faster and more accurate method to determine where an eclipse would be visible. She also found a way to predict more occultations of the Moon; these moments when the Moon passed before other astronomical bodies were used to investigate the Moon's orbit. Her new method for calculating solar eclipses allowed for a level of detail that could be used to understand the ionosphere. During this period, she participated in expeditions to view the solar eclipse of June 19, 1936 in Russia. Also, she organized and participated in the Hayden Planetarium-Grace Eclipse Expedition to Peru to view, photograph, and broadcast by radio the solar eclipse of June 8, 1937. Lewis retired from service at the Naval Observatory in 1951 but continued to publish in newspapers and magazines until 1955. The length of her career and her prominence are unlike that of other women in astronomy; according to Lankford and Stavings, only 12% of women astronomers from 1900-1940 had careers longer than 25 years.

Bibliography 1905 A prediction of the solar eclipse of August 1905 (Thesis) 1919 Splendors of the Sky 1922 Astronomy for Young Folks 1924 A Handbook Of Solar Eclipses

Notes

References

External links Works by Isabel Martin Lewis at Project Gutenberg Works by or about Isabel Martin Lewis at the Internet Archive

Illustrations

Worked examples

Example 1 — a first encounter with Isabel Martin Lewis

Start with the simplest possible case. Write down what Isabel Martin Lewis 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 Isabel Martin Lewis 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 Isabel Martin Lewis 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 Isabel Martin Lewis

In research: Isabel Martin Lewis 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 Isabel Martin Lewis 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: Isabel Martin Lewis is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1881 births, 1966 deaths, American women astronomers, so understanding it makes those chapters shorter.
In everyday life: Look for Isabel Martin Lewis 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 Isabel Martin Lewis in 20 minutes

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

Frequently asked questions

What is Isabel Martin Lewis in simple terms?

Why does Isabel Martin Lewis 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 Isabel Martin Lewis?

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 Isabel Martin Lewis.