engineering

Leslie A. Geddes

Leslie A. Geddes 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 Leslie A. Geddes rather than just read about it. In short: Leslie Alexander Geddes (May 24, 1921 – October 25, 2009) was an electrical engineer and physiologist. He conducted research in electromyography, cardiac output, cardiac pacing, ventricular defibrillation, and blood pressure.

Key takeaways

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

Reference excerpt

Leslie Alexander Geddes (May 24, 1921 – October 25, 2009) was an electrical engineer and physiologist. He conducted research in electromyography, cardiac output, cardiac pacing, ventricular defibrillation, and blood pressure. He discovered and demonstrated precisely the optimal sites on the chest for defibrillation or pacing.

Biography Geddes was born May 24, 1921, in Scotland, and moved with his family to Quebec, Canada at a young age. He held the B.S. and M.S. degrees in electrical engineering from McGill University, Montreal, Quebec, and the Ph.D. degree in Physiology from Baylor College of Medicine, Houston, Texas. At that medical school, he was Assistant, Associate, and Full Professor of Physiology, and Director of the Division of Biomedical Engineering. Director of Engineering at Purdue University. Geddes was a member of the American Physiological Society, and was a Fellow of the IEEE; the American Association for the Advancement of Science; the American College of Cardiology; Australasian College of Physical Scientists and Engineers in Medicine; and the Royal Society of Medicine. He received the award for leadership in biomedical engineering from the Alliance for Engineering in Medicine and Biology (1985); was elected to the National Academy of Engineering (1985); the IEEE Engineering in Medicine and Biology Society Career Achievement Award (1986); the Association for the Advancement of Medical Instrumentation Laufman-Greatbatch Award(1987); the Outstanding Educator Award of the American Society for Engineering Education (1989); the IEEE Edison Medal in 1994 for fundamental contributions to applied biomedical instrumentation and the understanding of the electrical properties of the cardiovascular system, and the 2006 National Medal of Technology by President George W. Bush for his contributions to electrode design and tissue restoration. He was awarded a D.Sc. honoris causa by McGill University in 1971. He died on October 25, 2009.

References

External links Geddes Home page

Worked examples

Example 1 — a first encounter with Leslie A. Geddes

Start with the simplest possible case. Write down what Leslie A. Geddes 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 Leslie A. Geddes 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 Leslie A. Geddes 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 Leslie A. Geddes

In research: Leslie A. Geddes 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 Leslie A. Geddes 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: Leslie A. Geddes is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1921 births, 2009 deaths, British emigrants to Canada, so understanding it makes those chapters shorter.
In everyday life: Look for Leslie A. Geddes 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 Leslie A. Geddes in 20 minutes

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

Frequently asked questions

What is Leslie A. Geddes in simple terms?

Why does Leslie A. Geddes 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 Leslie A. Geddes?

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 Leslie A. Geddes.