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Harlan James Smith

Harlan James Smith 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 Harlan James Smith rather than just read about it. In short: Harlan James Smith (August 25, 1924 – October 17, 1991) was an American astronomer. He served as director of the University of Texas McDonald Observatory from 1963 to 1989, where, among other accomplishments, he initiated the construction of the Harlan J.

Harlan James Smith — main illustration
Harlan James Smith — illustration

Key takeaways

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

Reference excerpt

Harlan James Smith (August 25, 1924 – October 17, 1991) was an American astronomer. He served as director of the University of Texas McDonald Observatory from 1963 to 1989, where, among other accomplishments, he initiated the construction of the Harlan J. Smith Telescope, a 2.7-meter (107-inch) reflector bearing his name . Smith was born in Wheeling, West Virginia, the son of Paul and Anna McGregor Smith. While attending Wheeling High School he was named first runner up in the "Westinghouse National Science Talent Search". From 1943 until the end of World War II he served in the U.S. Army Air Corps, performing weather observation. Following the war he attended Harvard University, earning a B.A. in 1949. In 1950 he married Joan Greene, and by 1951 had earned his M.S. degree from Harvard. He began teaching at the astronomy department at Yale University in 1953, but still completed his Ph.D. from Harvard by 1955. During his career he studied variable stars, the radio emission from planets, as well as photometry and astronomical instruments. With Dorrit Hoffleit, he was the first to observe the optical variability of quasars, and discovered a class of variable stars known as Delta Scuti variables. He came to McDonald Observatory as director in 1963, when he was also named chair of the University of Texas Astronomy Department in Austin, Texas. McDonald Observatory itself is located 440 miles west of Austin, in the Davis Mountains of West Texas. As head of the observatory, Smith's first major act was to obtain the funds needed to build the 2.7m telescope. Toward that end, he persuaded NASA the telescope was needed in support of space missions to the planets. The telescope brought new life to the observatory and helped recruit young faculty members, establishing McDonald as key player in the exploration of the Solar System. In 1991, Smith received the NASA Distinguished Public Service Medal "for a lifetime of service to the astronomy and space communities." From 1966 until 1970, Smith was a member of the Committee on the Large Space Telescope, an ad hoc group formed by the National Academy of Sciences, the work of which resulted in the Hubble Space Telescope. He also was the chairperson of the NASA Space Science Board from 1977 until 1980, and there helped propose NASA's Great Observatories program. Smith was an enthusiastic proponent of educating the public on astronomy, and provided the support needed to develop the syndicated radio program StarDate. He also developed "The Story of the Universe", a series of educational films. He was also a proponent of international cooperation, particularly with China which he visited several times. He served as co-editor of the Astronomical Journal as well as acting secretary for the American Astronomical Society. Smith retired as McDonald Observatory's director in 1989. Afterwards, he served as the Edward Randall Jr., MD, Centennial Professor of Astronomy at the University of Texas at Austin. Smith died in 1991 due to complications related to cancer. He was survived by his wife and four children, along with their grandchildren.

Awards and honors 1991 NASA Distinguished Public Service Medal A professorship in astronomy at the University of Texas is named after him. Asteroid 3842 Harlansmith is named after him. The crater Harlan on the Moon is named after him.

References

External links Harlan James Smith, 1924-1991 Wheeling Hall of Fame Obituary: Harlan J. Smith, 1924-1991, by James Nathaniel Douglas.

Illustrations

Harlan James Smith: Harlan J. Smith at McDonald Observatory
Harlan J. Smith at McDonald Observatory

Worked examples

Example 1 — a first encounter with Harlan James Smith

Start with the simplest possible case. Write down what Harlan James Smith 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 Harlan James Smith 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 Harlan James Smith 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 Harlan James Smith

In research
Harlan James Smith 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 Harlan James Smith 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
Harlan James Smith is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1924 births, 1991 deaths, American astronomers, so understanding it makes those chapters shorter.
In everyday life
Look for Harlan James Smith 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 Harlan James Smith in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Harlan James Smith means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Harlan James Smith out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Harlan James Smith in simple terms?

Harlan James Smith (August 25, 1924 – October 17, 1991) was an American astronomer. He served as director of the University of Texas McDonald Observatory from 1963 to 1989, where, among other accomplishments, he initiated the construction of the Harlan J.

Why does Harlan James Smith 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 Harlan James Smith?

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 Harlan James Smith.

Tags

  • 1924 births
  • 1991 deaths
  • American astronomers
  • Harvard University alumni
  • The Astronomical Journal editors
  • University of Texas at Austin faculty
  • Yale University faculty

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