astronomy

Naoki Yokoyama

Naoki Yokoyama 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 Naoki Yokoyama rather than just read about it. In short: Naoki Yokoyama (横山直樹, Yokoyama Naoki) (March 28, 1949 - ) is a Japanese electrical engineer, active in the fields of nanotechnology and electronic and photonic devices, best known for his success in fabricating hot-electron transistors and invention of resonant-tunneling transistors. Yokoyama born in Osaka, Japan, received his bachelor's degree in Physics from Osaka City University (1971), and master's (1973) and P…

Key takeaways

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

Reference excerpt

Naoki Yokoyama (横山直樹, Yokoyama Naoki) (March 28, 1949 - ) is a Japanese electrical engineer, active in the fields of nanotechnology and electronic and photonic devices, best known for his success in fabricating hot-electron transistors and invention of resonant-tunneling transistors. Yokoyama born in Osaka, Japan, received his bachelor's degree in Physics from Osaka City University (1971), and master's (1973) and PhD (1984) degrees in Engineering from the Graduate School of Engineering Science at Osaka University. He joined the Semiconductor Devices Laboratory of Fujitsu Laboratories Ltd. in 1973, where he was subsequently named a Fellow and General Manager of its Nanotechnology Research Center in 2000. He is also Visiting Professor of the University of Tokyo. Yokoyama received the 1987 GaAs Symposium Young Scientist Award, and 1998 IEEE Morris N. Liebmann Memorial Award "for contributions to and leadership in the development of self-aligned refractory-gate gallium arsenide MESFET integrated circuits." He was elected an IEEE Fellow in 2000, Fellow of the Institute of Electronics, Information and Communication Engineers in 2003, and Fellow of the Applied Physics Society in 2007.

Selected works Masayuki Abe, Naoki Yokoyama, Semiconductor heterostructure devices, Volume 8 of Japanese technology reviews, Taylor & Francis US, 1989. ISBN 978-2-88124-338-7.

References Naoki Yokoyama short biography Naoki Yokoyama curriculum vitae IEEE Morris N. Liebmann Memorial Award recipients

Worked examples

Example 1 — a first encounter with Naoki Yokoyama

Start with the simplest possible case. Write down what Naoki Yokoyama 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 Naoki Yokoyama 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 Naoki Yokoyama 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 Naoki Yokoyama

In research: Naoki Yokoyama 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 Naoki Yokoyama 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: Naoki Yokoyama is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1949 births, Academic staff of the University of Tokyo, Japanese electrical engineers, so understanding it makes those chapters shorter.
In everyday life: Look for Naoki Yokoyama 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 Naoki Yokoyama in 20 minutes

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

Frequently asked questions

What is Naoki Yokoyama in simple terms?

Why does Naoki Yokoyama 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 Naoki Yokoyama?

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 Naoki Yokoyama.