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Norio Kato

Norio Kato 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 Norio Kato rather than just read about it. In short: Norio Kato (Japanese: 加藤 範夫, Kato Norio, March 10, 1923 – April 5, 2002) was a Japanese physicist and crystallographer. He was known for his contributions in diffraction topography and the dynamical theory of diffraction, including the validation of the Pendellösung effect and extensions to account for realistic scattering conditions.

Key takeaways

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

Reference excerpt

Norio Kato (Japanese: 加藤 範夫, Kato Norio, March 10, 1923 – April 5, 2002) was a Japanese physicist and crystallographer. He was known for his contributions in diffraction topography and the dynamical theory of diffraction, including the validation of the Pendellösung effect and extensions to account for realistic scattering conditions.

Education and career Kato was born in Shanghai, China but received his education in Japan. He studied at Seikei Gakuen, where he was taught haiku by Nakamura Kusatao, which would become one of Kato's lifelong hobby. Kato entered University of Tokyo to study physics, where he obtained a BSc degree in 1944. He went on to study under the electron microscopist Ryoji Uyeda at Nagoya University, where he received a MSc in 1946 and a doctoral degree in physics in 1954. In 1950, Kato worked at the Kobayasi Institute of Physical Research (now part of RIKEN) under Shoji Nishikawa. After his PhD, Kato continued working at the Kobayasi institute before moving to the United States in 1957 as a Fulbright scholar to conduct postdoctoral research at Harvard University and later at University of Bristol in the UK. Kato published some of his most important works in this period, including the joint work with Andrew Richard Lang at Harvard University on the observation of the Pendellösung effect in quartz via X-ray diffraction. Kato returned to Japan and Nagoya University in 1960 as an associate professor of Applied Physics and became a full professor in 1961. He later moved to the Department of Crystalline Materials Science of the same university and worked until his retirement in 1986. Afterwards, Kato moved to Meijo University, where he taught in the Department of Physics for more than ten years until 1998. Kato published textbooks in crystallography and X-ray diffraction in Japanese. His last book was about haiku, which came out in 2001.

Honors and awards Kato was an associate editor of the Journal of Crystal Growth from 1967 to 1977. He was a member of the executive committee of the International Union of Crystallography from 1968 to 1972. He is a recipient of the Chunichi cultural award in 1976. He received the Ewald Prize in 1993 for his contribution to the dynamical theory of diffraction and diffraction topography. He was president of the Crystallographic Society of Japan in 1982 and president of the International Union of Crystallography from 1978 to 1981, the first Asian to lead the international organization.

Bibliography Kato, Norio, ed. (December 10, 1970). 結晶成長 (in Japanese). 日本物理学会. Kato, Norio (September 1, 1995). X線回折と構造評価 (in Japanese). 朝倉書店. ISBN 978-4-254-13626-5. Kato, Norio (January 1, 2001). 私は良寛です (in Japanese). 日本図書刊行会. ISBN 978-4-8231-0606-4.

References

Worked examples

Example 1 — a first encounter with Norio Kato

Start with the simplest possible case. Write down what Norio Kato 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 Norio Kato 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 Norio Kato 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 Norio Kato

In research
Norio Kato 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 Norio Kato 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
Norio Kato is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1923 births, 2002 deaths, 20th-century Japanese physicists, so understanding it makes those chapters shorter.
In everyday life
Look for Norio Kato 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 Norio Kato in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Norio Kato means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Norio Kato out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Norio Kato in simple terms?

Norio Kato (Japanese: 加藤 範夫, Kato Norio, March 10, 1923 – April 5, 2002) was a Japanese physicist and crystallographer. He was known for his contributions in diffraction topography and the dynamical theory of diffraction, including the validation of the Pendellösung effect and extensions to account…

Why does Norio Kato 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 Norio Kato?

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 Norio Kato.

Tags

  • 1923 births
  • 2002 deaths
  • 20th-century Japanese physicists
  • Academic staff of Meiji University
  • Academic staff of Nagoya University
  • Crystallographers
  • Harvard University people
  • Nagoya University alumni
  • People from Shanghai
  • Presidents of the International Union of Crystallography
  • University of Tokyo alumni

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