astronomy

Wendy Mao

Wendy Mao 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 Wendy Mao rather than just read about it. In short: Wendy Li-Wen Mao is an American geologist who is a professor at SLAC National Accelerator Laboratory. Her research considers the mineral physics of planetary interiors, new materials under extreme environments and novel characterisation techniques.

Key takeaways

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

Reference excerpt

Wendy Li-Wen Mao is an American geologist who is a professor at SLAC National Accelerator Laboratory. Her research considers the mineral physics of planetary interiors, new materials under extreme environments and novel characterisation techniques. In 2021 she was elected Fellow of the European Association of Geochemistry.

Early life and education Mao is a second generation Chinese American, born to Agnes Mao and Ho-Kwang Mao. She grew up in Washington, D.C. Mao attended the Massachusetts Institute of Technology (MIT), where she specialized in materials science and engineering. Whilst at MIT, Mao was inducted into the Phi Beta Kappa society. She moved to the University of Chicago as a graduate student, where she studied the geochemistry of iron in the core of the Earth.

Research and career Mao joined the faculty at Stanford University in 2007. She was made Professor of Geological Science at Stanford. Her research considers the study of extreme environments in an effort to design more efficient materials for energy generation and storage. In 2015, Mao found evidence that life existed on earth 4.1 billion years ago, which indicates that it survived the well-documented bombardment of the inner solar system that formed the craters in the moon. She made use of X-ray imaging to study zircons, durable minerals that form from molten rocks and preserve information about their immediate environments for hundreds of thousands of years. Beyond zircons, Mao has used the X-ray laser and X-ray free-electron lasers at SLAC to study the formation of ice, and how the process depends on pressure and temperature. Mao has combined her training in materials science with her interest in geology to design light, strong metal alloys. These alloys are produced at high pressures and contain hexagonally closed packed structures, which result in extraordinarily high entropy alloys. Before the work of Mao, it was generally accepted that metals would not form hexagonal close packed structures because of the strong magnetic interactions between metal atoms. She showed that use of high pressure disrupts these interactions, and that the hexagonal close packed structures persisted even when the pressure was removed. Mao used high pressure, high temperature chambers to form stable phases of perovskites. Perovskites exist in several phases, with the so-called black phases demonstrating impressive solar cell performance. Mao showed that by compressing the yellow phases of perovskites in a diamond anvil cell, heating the crystals to 450 °C and slow cooling to room temperature it is possible to form a stable version of the black phase.

Awards and honors 2008 Stanford University Consortium for Materials Properties Research in Earth Sciences Distinguished Lecturer 2013 Mineralogical Society of America Award 2021 Elected Fellow of the European Association of Geochemistry 2021 Elected Fellow of the American Geophysical Union

Selected publications

Wendy L Mao; Ho-Kwang Mao; Alexander F Goncharov; et al. (1 September 2002). "Hydrogen clusters in clathrate hydrate". Science. 297 (5590): 2247–2249. doi:10.1126/science.1075394. ISSN 0036-8075. PMID 12351785. Wikidata Q34152111. Wendy L Mao; Ho-Kwang Mao; Peter J Eng; et al. (1 October 2003). "Bonding changes in compressed superhard graphite". Science. 302 (5644): 425–427. doi:10.1126/science.1089713. ISSN 0036-8075. PMID 14564003. Wikidata Q79176477. Wendy L Mao; Ho-Kwang Mao (7 January 2004). "Hydrogen storage in molecular compounds". Proceedings of the National Academy of Sciences of the United States of America. 101 (3): 708–710. Bibcode:2004PNAS..101..708M. doi:10.1073/pnas.0307449100. ISSN 0027-8424. PMC 321744. PMID 14711993. Wikidata Q35553739.

References

Illustrations

Worked examples

Example 1 — a first encounter with Wendy Mao

Start with the simplest possible case. Write down what Wendy Mao 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 Wendy Mao 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 Wendy Mao 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 Wendy Mao

In research: Wendy Mao 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 Wendy Mao 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: Wendy Mao is common in secondary-school and first-year university syllabi. It links to neighbouring topics 21st-century American women, American geologists, American geophysicists, so understanding it makes those chapters shorter.
In everyday life: Look for Wendy Mao 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 Wendy Mao in 20 minutes

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

Frequently asked questions

What is Wendy Mao in simple terms?

Why does Wendy Mao 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 Wendy Mao?

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 Wendy Mao.