engineering

Stephen Gedney

Stephen Gedney 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 Stephen Gedney rather than just read about it. In short: Stephen D. Gedney is an American electrical engineer, currently a Distinguished Professor of Electrical Engineering at the University of Colorado Denver's College of Engineering, Design and Computing.

Key takeaways

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

Reference excerpt

Stephen D. Gedney is an American electrical engineer, currently a Distinguished Professor of Electrical Engineering at the University of Colorado Denver's College of Engineering, Design and Computing. Gedney is a pioneer in computational electromagnetic techniques. He is most widely known for his development of the Uniaxial Perfectly Matched Layer media method, the complex-frequency shifted convolutional PML, along with J. Alan Roden, and his contributions to the Locally Corrected Nystrom method. Gedney's papers and textbook on the finite difference time domain technique in particular are widely cited. Gedney is an IEEE Fellow.

References

Worked examples

Example 1 — a first encounter with Stephen Gedney

Start with the simplest possible case. Write down what Stephen Gedney 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 Stephen Gedney 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 Stephen Gedney 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 Stephen Gedney

In research: Stephen Gedney 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 Stephen Gedney 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: Stephen Gedney is common in secondary-school and first-year university syllabi. It links to neighbouring topics 20th-century American engineers, 21st-century American engineers, American electrical engineer stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Stephen Gedney 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 Stephen Gedney in 20 minutes

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

Frequently asked questions

What is Stephen Gedney in simple terms?

Why does Stephen Gedney 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 Stephen Gedney?

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 Stephen Gedney.