astronomy

Ion I. Agârbiceanu

Ion I. Agârbiceanu 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 Ion I. Agârbiceanu rather than just read about it. In short: Ion I. Agârbiceanu (6 January 1907 – 9 March 1971) was a Romanian physicist born in Bucium, Alba County in Transylvania.

Key takeaways

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

Reference excerpt

Ion I. Agârbiceanu (6 January 1907 – 9 March 1971) was a Romanian physicist born in Bucium, Alba County in Transylvania. He was the son of the writer and Greek-Catholic priest Ion Agârbiceanu and his wife Maria. After completing his secondary education at the George Barițiu High School in Cluj, Agârbiceanu studied from 1925 to 1929 at the Electrotechnic Institute of Bucharest. He then pursued his studies at the University of Paris, where he obtained in 1934 his Ph.D. in Physics under the direction of Aimé Cotton; his thesis, Recherche sur le spectre de fluorescence et d'absorption des vapeurs de Iodine, was published in Annales de physique. From 1951 to 1955 he was a professor in the Faculty of Mathematics and Physics of the University of Bucharest, after which he transferred to the Polytechnic Institute of Bucharest. He invented the gas laser in 1962, the first major improvement on laser technology, which was discovered by Theodore Maiman. Agârbiceanu's laser used a mixture of helium and neon to function. This laser was invented during Agârbiceanu's long tenure as head of Physics Lab 1 at the Polytechnic Institute of Bucharest, which lasted from 1955 to 1971. He was elected a corresponding member of the Romanian Academy in 1963. Agârbiceanu died in Cluj on 9 March 1971, a scant few months after he stopped working for the Polytechnic Institute of Bucharest.

Notes

Illustrations

Worked examples

Example 1 — a first encounter with Ion I. Agârbiceanu

Start with the simplest possible case. Write down what Ion I. Agârbiceanu 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 Ion I. Agârbiceanu 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 Ion I. Agârbiceanu 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 Ion I. Agârbiceanu

In research: Ion I. Agârbiceanu 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 Ion I. Agârbiceanu 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: Ion I. Agârbiceanu is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1907 births, 1971 deaths, 20th-century Romanian inventors, so understanding it makes those chapters shorter.
In everyday life: Look for Ion I. Agârbiceanu 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 Ion I. Agârbiceanu in 20 minutes

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

Frequently asked questions

What is Ion I. Agârbiceanu in simple terms?

Ion I. Agârbiceanu (6 January 1907 – 9 March 1971) was a Romanian physicist born in Bucium, Alba County in Transylvania.

Why does Ion I. Agârbiceanu 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 Ion I. Agârbiceanu?

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 Ion I. Agârbiceanu.