astronomy

Karimat El-Sayed

Karimat El-Sayed 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 Karimat El-Sayed rather than just read about it. In short: Karimat El-Sayed (Arabic: كريمات السيد) is an Egyptian academic, crystallographer, and proponent of women's education. She is a professor of crystallography at Ain Shams University.

Key takeaways

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

Reference excerpt

Karimat El-Sayed (Arabic: كريمات السيد) is an Egyptian academic, crystallographer, and proponent of women's education. She is a professor of crystallography at Ain Shams University. She was president of the International Federation of Crystals, Education Division for three years.

Biography El-Sayed's father was an Arabic teacher; her brothers and sisters are doctors and scientists. Her father was open-minded about her educational ambitions but her mother worried about the family's reputation and tried to have her married off after she studied mathematics and physics at Ain Shams University. El-Sayed completed her PhD at University College London under Kathleen Lonsdale in 1965. Under Lonsdale's guidance she had been able to correlate the atomic vibration of materials with the observed expansion of that material due to an increase in temperature. Karimat El-Sayed founded the women's section of the Physics Department at King Abdul-Aziz University (1975). She was president of the International Federation of Crystals, Education Division for three years, and is the president of the Egyptian Committee on Crystallography for the 2014 International Year of Crystallography.

Views El-Sayed has strong views about the role of women in science and cites figures that show that the majority of scientists working on materials, who create patents, are women. She lectures to younger women talking about her heroine Marie Curie and offering herself as an alternative role model.

Awards 2003: L'Oréal-UNESCO Awards for Women in Science.

Personal life El-Sayed married Salah A. Tahoun a Soil scientist, professor at Zagazig University faculty of agriculture . They had three children. Her postdoctoral research studied small impurities in metals which was important as the discovery of transistors had shown how these small additions to a material could radically effect its properties.

References

Worked examples

Example 1 — a first encounter with Karimat El-Sayed

Start with the simplest possible case. Write down what Karimat El-Sayed 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 Karimat El-Sayed 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 Karimat El-Sayed 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 Karimat El-Sayed

In research: Karimat El-Sayed 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 Karimat El-Sayed 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: Karimat El-Sayed is common in secondary-school and first-year university syllabi. It links to neighbouring topics 21st-century women scientists, Academic staff of Ain Shams University, Ain Shams University alumni, so understanding it makes those chapters shorter.
In everyday life: Look for Karimat El-Sayed 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 Karimat El-Sayed in 20 minutes

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

Frequently asked questions

What is Karimat El-Sayed in simple terms?

Karimat El-Sayed (Arabic: كريمات السيد) is an Egyptian academic, crystallographer, and proponent of women's education. She is a professor of crystallography at Ain Shams University.

Why does Karimat El-Sayed 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 Karimat El-Sayed?

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 Karimat El-Sayed.