engineering

John L. Moll

John L. Moll is a engineering 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 John L. Moll rather than just read about it. In short: John Louis Moll (December 21, 1921 – July 19, 2011) was an American electrical engineer, notable for his contributions to solid-state physics. Biography Moll was born in Wauseon, Ohio, and obtained a B.S. in physics and a Ph.D. in electrical engineering from Ohio State University in 1943 and 1952, respectively.

Key takeaways

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

Reference excerpt

John Louis Moll (December 21, 1921 – July 19, 2011) was an American electrical engineer, notable for his contributions to solid-state physics.

Biography Moll was born in Wauseon, Ohio, and obtained a B.S. in physics and a Ph.D. in electrical engineering from Ohio State University in 1943 and 1952, respectively. The Ebers-Moll transistor model, and the theory of the p-n-p-n switch, came from this effort. He was a professor of electrical engineering at Stanford University from 1958 to 1970. Moll was the recipient of the Guggenheim Fellowship in 1964; Howard N. Potts Medal, Franklin Institute, 1967, and received the IEEE Edison Medal in 1991 "for pioneering contributions to diffused and oxide-masked silicon devices, transistor analysis, the p-n-p-n switch, and optoelectronics." He was a Fellow of the IEEE and a member of the American Physical Society, the National Academy of Engineering, and the National Academy of Sciences.

Footnotes

References Dr. John Moll Wins C&C Prize. Hewlett-Packard. Accessed 2011-03-01. J. J. Ebers & J.L. Moll (1954) "Large signal behavior of junction transistors", Proceedings of the Institute of Radio Engineers 42(12):1761–72. Obituary. Accessed 2011-08-04. "John L. Moll died Tuesday". Los Altos Town Crier. Retrieved 2011-08-04.

Illustrations

Worked examples

Example 1 — a first encounter with John L. Moll

Start with the simplest possible case. Write down what John L. Moll claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, 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 John L. Moll 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 John L. Moll 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 John L. Moll

In research: John L. Moll appears in engineering 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 John L. Moll 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: John L. Moll is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1921 births, 2011 deaths, American electrical engineers, so understanding it makes those chapters shorter.
In everyday life: Look for John L. Moll 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 John L. Moll in 20 minutes

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

Frequently asked questions

What is John L. Moll in simple terms?

John Louis Moll (December 21, 1921 – July 19, 2011) was an American electrical engineer, notable for his contributions to solid-state physics. Biography Moll was born in Wauseon, Ohio, and obtained a B.S. in physics and a Ph.D. in electrical engineering from Ohio State University in 1943 and 1952…

Why does John L. Moll matter?

Because it connects several engineering 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 John L. Moll?

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 John L. Moll.