physics

Tōkai, Ibaraki

Tōkai, Ibaraki is a physics 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 Tōkai, Ibaraki rather than just read about it. In short: Tōkai (東海村, Tōkai-mura) is a village located in Ibaraki Prefecture, Japan. As of 1 July 2020, the village had an estimated population of 37,651 in 15,148 households and a population density of 991 persons per km2.

Key takeaways

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

Reference excerpt

Tōkai (東海村, Tōkai-mura) is a village located in Ibaraki Prefecture, Japan. As of 1 July 2020, the village had an estimated population of 37,651 in 15,148 households and a population density of 991 persons per km2. The percentage of the population aged over 65 was 25.8%. The total area of the village is 38.0 square kilometres (14.7 sq mi). The Japan Atomic Energy Agency along with other organizations currently operate a number of nuclear technology research facilities in the town. In particular, Tōkai Nuclear Power Plant is located in Tōkai.

Geography Located in central Ibaraki Prefecture, approximately 120 kilometres (75 mi) north of Tokyo, Tōkai is bordered to the east by the Pacific Ocean. The village is about 15 kilometers northeast of the prefectural capital of Mito. with the Kuji River to the north. The area is located at the northern end of the Hitachi Plateau, and consists of lowlands which are alluvium and covered with rice paddy fields, and the plateau is diluvial, with upland fields and flatland forests.

Surrounding municipalities Ibaraki Prefecture

Hitachi Hitachinaka Naka

Demographics Per Japanese census data, the population of Tōkai has grown steadily over the last century.

History The villages of Muramatsu and Ishigami were created with the establishment of the modern municipalities system on April 1, 1889. On March 31, 1955, the two villages merged to form the village of Tōkai. In 1956, Japan Atomic Energy Research Institute was established at Tōkai. After JRR-1, the first nuclear reactor in Japan, reached criticality, many nuclear-related facilities such as Japan Atomic Energy Agency, Japan Atomic Power Company Tokai Power Station and Tokai No. 2 Power Station have been concentrated in the village, which became the base of the Japanese nuclear industry. The village was the site of the Tokaimura nuclear accident which occurred at the JCO nuclear reprocessing plant on 30 September 1999, which killed two people.

Government Tōkai has a mayor-council form of government with a directly elected mayor and a unicameral village council of 18 members. Tōkai contributes one member to the Ibaraki Prefectural Assembly. In terms of national politics, the village is part of Ibaraki 5th district of the lower house of the Diet of Japan.

Economy The nuclear power industry, together with associated government and private research facilities (including the J-PARC particle physics laboratory), and government subventions form the basis of the local economy.

Education Tōkai has six public elementary schools and two public middle schools operated by the village government, and one public high school operated by the Ibaraki Prefectural Board of Education. In addition, the University of Tokyo and the Graduate University for Advanced Studies have research facilities located at Tōkai.

Transportation

Railway JR East – Jōban Line

Tōkai

Highway Jōban Expressway – Tōkai Interchange National Route 6 National Route 245

Seaports Port of Ibaraki

International relations Idaho Falls, Idaho, United States

Noted people Masaru Hashimoto, politician Teruaki Kobayashi, professional soccer player

References

External links Media related to Tōkai, Ibaraki at Wikimedia Commons Official Website (in Japanese)

Illustrations

Worked examples

Example 1 — a first encounter with Tōkai, Ibaraki

Start with the simplest possible case. Write down what Tōkai, Ibaraki claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 Tōkai, Ibaraki 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 Tōkai, Ibaraki 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 Tōkai, Ibaraki

In research: Tōkai, Ibaraki appears in physics 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 Tōkai, Ibaraki 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: Tōkai, Ibaraki is common in secondary-school and first-year university syllabi. It links to neighbouring topics Nuclear technology in Japan, Populated coastal places in Japan, Port settlements in Japan, so understanding it makes those chapters shorter.
In everyday life: Look for Tōkai, Ibaraki 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 Tōkai, Ibaraki in 20 minutes

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

Frequently asked questions

What is Tōkai, Ibaraki in simple terms?

Why does Tōkai, Ibaraki matter?

Because it connects several physics 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 Tōkai, Ibaraki?

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 Tōkai, Ibaraki.