astronomy

Nabil M. Lawandy

Nabil M. Lawandy 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 Nabil M. Lawandy rather than just read about it. In short: Nabil Mishreky Lawandy (born March 12, 1957) is an American physicist, inventor, academic, and businessman. After 18 years as a professor of Engineering and Physics at Brown University, Lawandy founded Spectra Systems Corporation.

Key takeaways

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

Reference excerpt

Nabil Mishreky Lawandy (born March 12, 1957) is an American physicist, inventor, academic, and businessman. After 18 years as a professor of Engineering and Physics at Brown University, Lawandy founded Spectra Systems Corporation. He is currently the President, and Chief Executive Officer of Spectra Systems Corporation, a London Stock Exchange-listed company and is currently a Professor of Research at Brown University in the School of Engineering. Technology invented by Lawandy is used by many of the world's central banks to protect against counterfeiting of banknotes.

Early life Lawandy was born in Cairo, Egypt to Mishreky Aziz Lawandy and Anastasia Sakelaridis. At the age of eight, the Lawandy family immigrated to Canada and then to the United States, where they became naturalized citizens. Lawandy grew up in northern Virginia and enrolled at the Johns Hopkins University where he graduated with Honors in 1977 and proceeded to complete his Master's from the same university in 1979. The very next year, he completed his Ph.D. in chemical physics at the age of 23.

Career Work at NASA Working at the NASA Goddard Space Flight Center, Lawandy was part of a team that developed optically pumped far-infrared molecular lasers for use as local oscillators in astronomical heterodyne detection systems. The lasers developed were used to map the concentration of carbon monoxide (CO) in the Orion Nebula using the Keck telescopes at Mauna Kea. While still at NASA, Lawandy was one of the first to observe self-pulsing instabilities and deterministic chaos related to the Lorenz instability and dynamic Stark effects in optically pumped molecular lasers. Work at Brown University After joining the faculty at Brown University in 1981, Lawandy's work throughout his academic career was a combination of experiment and theory. His early work focused on instabilities and chaos in single and multimode lasers with particular emphasis in coherently driven instabilities associated with three-level systems. Lawandy's group was the first to observe optically encoded second-harmonic generation in bulk glasses and predicted the delocalization of carriers in disordered materials in strong light fields. In addition, Lawandy's research group developed novel laser fabrication methods for micro-optics in glasses, announced the first observations of the inhibition of spontaneous emission in a 3D photonic lattice of self-organized colloidal crystals and random media, Casimir forces in ordered dielectric media, laser action in a 3D FCC structure, and Random Laser action in scattering media with optically pumped dyes providing amplification of light. The work on random lasers [“laser Action in Strongly Scattering Media.” Nature 368, 436 (1994)] has resulted in a large body of work by many groups around the world and has been cited over 1400 times. Lawandy has also contributed to the field of plasmonics and predicted the oscillation of localized surface plasmon modes in systems with amplification. Lawandy has served as a thesis advisor to 19 Ph.D. students during his tenure as a Professor at Brown University and delivered over forty invited lectures on various research topics. His research has resulted in over 180 papers in refereed journals and 119 conference presentations and has been cited over 3200 times. Lawandy's career has been covered in many scientific journals and magazines as well as television segments, including The Economist, Scientific American, Science News, Wall Street Journal, Los Angeles Times, Boston Globe, Fox News, and BBC.

Patents and awards Lawandy holds over 100 published US and international patents in a number of applications spanning optical materials, processes, and devices and authentication technology. He is an Alfred P. Sloan Fellow, a recipient of a Cottrell Award, the Presidential Young Investigator Award, a 1995 Photonics Circle of Excellence Award, the Slater Foundation Innovation Award, and the Rolex Prize for his work on using Random Lasers for Photo-medicine. He has served as an editor for Optics Communications and Current Topics in Optics as well as on the scientific advisory boards of Orchid BioComputer and Finesse Solutions.

References

Illustrations

Worked examples

Example 1 — a first encounter with Nabil M. Lawandy

Start with the simplest possible case. Write down what Nabil M. Lawandy 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 Nabil M. Lawandy 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 Nabil M. Lawandy 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 Nabil M. Lawandy

In research: Nabil M. Lawandy 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 Nabil M. Lawandy 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: Nabil M. Lawandy is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1957 births, American physicists, Brown University faculty, so understanding it makes those chapters shorter.
In everyday life: Look for Nabil M. Lawandy 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 Nabil M. Lawandy in 20 minutes

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

Frequently asked questions

What is Nabil M. Lawandy in simple terms?

Why does Nabil M. Lawandy 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 Nabil M. Lawandy?

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 Nabil M. Lawandy.