astronomy

Roger H. French

Roger H. French is a astronomy 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 Roger H. French rather than just read about it. In short: Roger Harquail French is a materials scientist, engineer, academic and author. He is the Kyocera Professor in the Case School of Engineering at Case Western Reserve University (CWRU).

Key takeaways

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

Reference excerpt

Roger Harquail French is a materials scientist, engineer, academic and author. He is the Kyocera Professor in the Case School of Engineering at Case Western Reserve University (CWRU). French's research interests at CWRU span optical properties and electronic structure, degradation science of materials in outdoor-exposed technologies such as photovoltaics, and employing data science and deep learning using distributed and high-performance computing. While at DuPont he worked on semiconductor lithography, phase shift masks, pellicles, and photoresists, registering multiple patents. His publications comprise research articles and a book entitled Durability and Reliability of Polymers and Other Materials in Photovoltaic Modules. He received the 2020 Faculty Distinguished Research Award and the 2023 Innovation Week Inventor Award from Case Western Reserve University, in addition to being honored as a Senior Member of the IEEE and as a Fellow of the American Ceramic Society.

Education French graduated with a Bachelor of Science with Distinction in Materials Science and Engineering from Cornell University in 1979, and in 1985 obtained a PhD in Materials Science and Engineering from the Massachusetts Institute of Technology, working with doctoral advisor Robert L. Coble.

Career French began his research career in 1985 in Central Research and Development at DuPont. From 1993 to 2002, while still working at DuPont, he was a Visiting Scientist for a month a year in Manfred Rühle's lab at Max-Planck-Institut für Metallforschung in Stuttgart, Germany. His academic career began as an adjunct professor in the Materials Science Department at the University of Pennsylvania in 1996. In 2010, he joined Case Western Reserve University as the F. Alex Nason Professor and has been the Kyocera Professor of Ceramics at CWRU since 2016. He is also the director of the DOE-NNSA Center of Excellence for Materials Data Science for Stockpile Stewardship, and a Co-Principal Investigator of both the NSF Materials Data Science for Reliability and Degradation Center (MDS-Rely) and the NSF-sponsored IUCRC Center for Advancing Sustainable and Distributed Fertilizer Production (CASFER).

Research French has studied optical properties and electronic structures of ceramics, polymers, and biomolecules, employing spectroscopy and computational optics, and has explored radiation durability, photochemical degradation, and data-driven approaches to predict lifetime performance and enhance energy efficiency in outdoor-exposed technologies. His group has utilized VUV and optical spectroscopies, along with spectroscopic ellipsometry, to investigate the optical properties, electronic structure, and radiation durability of optical materials, polymers, ceramics, and liquids. He has earned patents for phase shift photomasks, transparent fluoropolymers for pellicles, photoresists and immersion fluids, and optical elements for photovoltaics. His research has contributed to the understanding of how these optical properties influence van der Waals quantum electrodynamical interactions, crucial in governing wetting phenomena and mesoscale assembly in nanotubes and biomolecular materials like DNA and proteins. French has developed non-relational, distributed computing environments based on Hadoop, Hbase, Ozone, Impala, and Spark for data science and analytics of complex systems. Through this framework, he has integrated real-world performance data with lab-based experimental datasets to elucidate degradation mechanisms and pathways active over the lifespan of technologies. His methods encompass network modeling, structural equations, and graphs to quantify and simulate global spatio-temporal systems such as PV power plants. In the area of Lifetime and Degradation Science (L&DS), French's focus has extended to examining long-lived environmentally-exposed materials, components, and systems, including PV technologies, roofing, and building exteriors. For projects under DOE-SETO, he has researched the lifetime performance and reliability of mono- and bi-facial silicon PERC modules and modeling PV fleet performance using spatio-temporal Graph Neural Networks (stGNNs). Under his leadership, the SDLE Research Center has applied data science methodologies across a broad spectrum of energy and materials projects, including a DOE ARPA-E funded initiative on building energy efficiency.

Personal life He is the son of James Bruce French.

Awards and honors 1989 – R&D Award for LPLS-521 VUV-LPLS Spectrophotometer, Research & Development World 1998 – Fulrath Award, American Ceramics Society 2020 – Faculty Distinguished Research Award, Case Western Reserve University 2023 – Innovation Week Inventor Award, Case Western Reserve University 2025 – Distinguished University Professor, Case Western Reserve University

Publications

Software packages Bryant, C., Wheeler, R. N., Rubel, F., & French, H. R. (2017, December 20). "kgc: Koeppen-Geiger Climatic Zones." SDLE Res. Cntr., Case Western Reserve University. Karimi, M. A., Pierce, G. B., Fada, S, J., Parrilla, A. N., French, H. R., Braid, L. J. (2020, May 8). "PVimage: Package for PV Image Analysis and Machine Learning Modeling." SDLE Res. Cntr., Case Western Reserve University. Huang, W. H., et al. (2021, April 14). "ddiv: Data Driven I-V Feature Extraction." SDLE Res. Cntr., Case Western Reserve University. Wang, M., et al. (2021, April 30). "SunsVoc: Constructing Suns-Voc from Outdoor Time-series I-V Curves." SDLE Res. Cntr., Case Western Reserve University. h Huang, W. H., et al. (2023, September 6). "netSEM: Network Structural Equation Modeling." SDLE Res. Cntr., Case Western Reserve University. Fan, Y., Yu, Xuanji., Weiser, R., Wu, Y., French, H. R. (2023). "PVplr-stGNN: Python." SDLE Res. Cntr., Case Western Reserve University. Bradley, H. A., et al. (2024, June 18). "FAIRmaterials: Python." SDLE Res. Cntr., Case Western Reserve University, Cleveland OH, USA. Gordon, E. J., et al. (2024, June 18). "FAIRmaterials: R." SDLE Res. Cntr., Case Western Reserve University.

Books Durability and Reliability of Polymers and Other Materials in Photovoltaic Modules (2019) ISBN 978-0-12-811545-9

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Roger H. French

Start with the simplest possible case. Write down what Roger H. French claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Roger H. French 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 Roger H. French 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 Roger H. French

In research: Roger H. French appears in astronomy 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 Roger H. French 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: Roger H. French is common in secondary-school and first-year university syllabi. It links to neighbouring topics 21st-century science writers, Case Western Reserve University faculty, Cornell University alumni, so understanding it makes those chapters shorter.
In everyday life: Look for Roger H. French 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 Roger H. French in 20 minutes

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

Frequently asked questions

What is Roger H. French in simple terms?

Roger Harquail French is a materials scientist, engineer, academic and author. He is the Kyocera Professor in the Case School of Engineering at Case Western Reserve University (CWRU).

Why does Roger H. French matter?

Because it connects several astronomy 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 Roger H. French?

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 Roger H. French.