chemistry

Rodney J. Bartlett

Rodney J. Bartlett is a chemistry 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 Rodney J. Bartlett rather than just read about it. In short: Rodney Joseph Bartlett (born March 31, 1944, in Memphis, Tennessee, U.S.) is Graduate Research Professor of Chemistry and Physics, University of Florida, Gainesville, US. Career He received his B.Sc. degree from Millsaps College in 1966 and Ph.D. from the University of Florida in 1971.

Key takeaways

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

Reference excerpt

Rodney Joseph Bartlett (born March 31, 1944, in Memphis, Tennessee, U.S.) is Graduate Research Professor of Chemistry and Physics, University of Florida, Gainesville, US.

Career He received his B.Sc. degree from Millsaps College in 1966 and Ph.D. from the University of Florida in 1971. Bartlett was an NDEA and IBM predoctoral fellow at the University of Florida under the joint supervision of N. Yngve Öhrn and Per-Olov Löwdin. Bartlett was subsequently an NSF postdoctoral researcher at Aarhus University, Denmark with Jan Linderberg and a postdoctoral researcher at Johns Hopkins University with Robert G. Parr. Bartlett became a staff scientist at Battelle's Pacific Northwest National Laboratory and then at Battelle Memorial Institute, Ohio. In 1981, Bartlett returned to Gainesville, as a professor of Chemistry and Physics, and then in 1988 rose to the rank of Graduate Research Professor. Bartlett has been widely recognized as a pioneer of rigorous many-body methods for electron correlation, in particular, many-body perturbation and coupled cluster methods, which are today's central computational tool for accurate electronic structure predictions. Bartlett and his coworkers were the first to formulate and implement coupled cluster theory with all single and double excitation operators (CCSD) in 1982, followed by triple (CCSDT) in 1987, quadruple (CCSDTQ), and even quintuple (CCSDTQP) excitation operators, and also many-body perturbation methods up to the sixth order. He developed a version of Feynman diagrams that both expedited the derivation of the equations and helped to visualize the physics of electron correlation. He also promoted the concept of size extensivity for many-body theory that scales properly with the number of particles, now viewed as an essential element of sound quantum chemistry approximations. Bartlett was also the first to explore the combination of coupled-cluster and many-body perturbation theories (in 1985) and proposed vastly successful approximations. It is now widely agreed that the coupled cluster and many-body perturbation methods that Bartlett has been instrumental in establishing offer the most predictive, generally applicable approaches in the field. These methods helped electronic structure theory be accepted by the chemistry community as a reliable and integral branch of chemistry. Bartlett has been among the most frequently cited chemists and ranked 25th in the period of 1981–97 according to ISI.

Honors and awards Bartlett was a Guggenheim Fellow at Harvard University and University of California, Berkeley in 1986, E.T.S. Walton Fellow of the Science Foundation of Ireland, a member of the International Academy of Quantum Molecular Science, and a recipient of Florida 2000 Award from the Florida Section of the American Chemical Society. Bartlett is the recipient of the American Chemical Society Award in Theoretical Chemistry (2007), the 2008 Schrödinger Medal of World Association of Theoretical and Computational Chemists (WATOC), the Boys-Rahman Award of the Royal Society of Chemistry (2009), Southern Chemist Award (2010), and honorary doctorates from Millsaps College (his alma mater) and from Comenius University (2012) in Bratislava, Slovakia. He was elected a Fellow of the American Physical Society in 1989 for "the development of many-electron methods for electron correlation in molecules, principally many-body perturbation theory and coupled-cluster theory, and their applications in chemical physics".

References

His International Academy of Quantum Molecular Science page

Worked examples

Example 1 — a first encounter with Rodney J. Bartlett

Start with the simplest possible case. Write down what Rodney J. Bartlett claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Rodney J. Bartlett 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 Rodney J. Bartlett 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 Rodney J. Bartlett

In research: Rodney J. Bartlett appears in chemistry 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 Rodney J. Bartlett 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: Rodney J. Bartlett is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1944 births, 21st-century American chemists, American computational chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Rodney J. Bartlett 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 Rodney J. Bartlett in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Rodney J. Bartlett 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.
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Frequently asked questions

What is Rodney J. Bartlett in simple terms?

Rodney Joseph Bartlett (born March 31, 1944, in Memphis, Tennessee, U.S.) is Graduate Research Professor of Chemistry and Physics, University of Florida, Gainesville, US. Career He received his B.Sc. degree from Millsaps College in 1966 and Ph.D. from the University of Florida in 1971.

Why does Rodney J. Bartlett matter?

Because it connects several chemistry 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 Rodney J. Bartlett?

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 Rodney J. Bartlett.