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Karl K. Darrow

Karl K. Darrow is a physics 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 Karl K. Darrow rather than just read about it. In short: Karl Kelchner Darrow (November 26, 1891 – June 7, 1982) was an American physicist and secretary of the American Physical Society from 1941 to 1967. Biography Darrow was born on November 26, 1891, in Chicago, Illinois.

Karl K. Darrow — main illustration
Karl K. Darrow — illustration

Key takeaways

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

Reference excerpt

Karl Kelchner Darrow (November 26, 1891 – June 7, 1982) was an American physicist and secretary of the American Physical Society from 1941 to 1967.

Biography Darrow was born on November 26, 1891, in Chicago, Illinois. He received his PhD from the University of Chicago, in Chicago, IL, under Robert A. Millikan in 1917. Darrow spent his career at Western Electric beginning 1917, and later at Bell Laboratories from its founding in 1925 until his retirement in 1956. He wrote four books and over 200 technical articles, historical essays, and critical reviews for professional journals- many of them in the Bell System Technical Journal. Darrow was a nephew of the famed trial attorney Clarence Darrow. He was elected to the American Philosophical Society in 1936. In his book Atomic Energy (1948), which contains four lectures he had given in 1947, he points out that in reality his subject is nuclear energy, but that at the time of the bombing of Hiroshima someone wrote of it as an atomic bomb, and the misusage spread "like a chain reaction". The book includes the following passage:

Here is the climax of my lectures, and here is where you should be frightened; and if I had an orchestral accompaniment, here is where the orchestra would have mounted to a tumultuous fortissimo, with the drums rolling and the trumpets blaring and the tuba groaning and the strings in a frenzy, and whatever else a Richard Wagner could contrive to cause a sense of Gotterdammerung; for, let there be no doubt of it, this is something that could bring on the twilight of civilization. But at this crucial juncture I have only words to serve me, and all the words are spoiled. We speak of an awful headache, a dreadful cold, a frightful bore, and an appalling storm; and now when something comes along that is really awful and dreadful and frightful and appalling, all these words have been devaluated and have no terror in them. I have to fall back on the saying, of unknown origin and dubious value, that the strongest emphasis is understatement. Let then this picture, with its circles and its symbols and its numbers, be considered an emphatic understatement of the most terrific thing yet known to man.

Darrow was elected to the American Academy of Arts and Sciences in 1964. Darrow died on June 7, 1982, in New York City.

Bibliography Introduction to Contemporary Physics, 1926 Electrical Phenomena in Gases, 1932 The Renaissance in Physics, MacMillan, 1936 Atomic Energy, 1948

References

External links Obituary in Physics Today November, 1982 Oral history interview transcript with Karl Darrow on 2 April 1964, American Institute of Physics, Niels Bohr Library & Archives - Session I Oral history interview transcript with Karl Darrow on 10 June 1964, American Institute of Physics, Niels Bohr Library & Archives - Session II Biography and archive of Darrow papers at Niels Bohr Library & Archives

Archival collections Darrow photo collection, Emilio Segrè Visual Archives, Niels Bohr Library & Archives Karl K. Darrow papers, 1872-1978 (bulk 1917-1972), Niels Bohr Library & Archives

Illustrations

Karl K. Darrow illustration

Worked examples

Example 1 — a first encounter with Karl K. Darrow

Start with the simplest possible case. Write down what Karl K. Darrow claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 Karl K. Darrow 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 Karl K. Darrow 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 Karl K. Darrow

In research
Karl K. Darrow appears in physics 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 Karl K. Darrow 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
Karl K. Darrow is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1891 births, 1982 deaths, 20th-century American physicists, so understanding it makes those chapters shorter.
In everyday life
Look for Karl K. Darrow 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 Karl K. Darrow in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Karl K. Darrow 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 Karl K. Darrow out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Karl K. Darrow in simple terms?

Karl Kelchner Darrow (November 26, 1891 – June 7, 1982) was an American physicist and secretary of the American Physical Society from 1941 to 1967. Biography Darrow was born on November 26, 1891, in Chicago, Illinois.

Why does Karl K. Darrow matter?

Because it connects several physics 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 Karl K. Darrow?

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 Karl K. Darrow.

Tags

  • 1891 births
  • 1982 deaths
  • 20th-century American physicists
  • Fellows of the American Physical Society
  • Members of the American Philosophical Society
  • University of Chicago alumni

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