physics

Terumi Tanaka

Terumi Tanaka 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 Terumi Tanaka rather than just read about it. In short: Terumi Tanaka (田中煕巳, Tanaka Terumi; born 29 April 1932) is a Japanese anti-nuclear and anti-war activist and former professor. He is a hibakusha, a survivor of the atomic bombing of Nagasaki, and is the secretary general of Nihon Hidankyo, a Japan-wide organisation of atomic and hydrogen bomb sufferers.

Key takeaways

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

Reference excerpt

Terumi Tanaka (田中煕巳, Tanaka Terumi; born 29 April 1932) is a Japanese anti-nuclear and anti-war activist and former professor. He is a hibakusha, a survivor of the atomic bombing of Nagasaki, and is the secretary general of Nihon Hidankyo, a Japan-wide organisation of atomic and hydrogen bomb sufferers. He lives in Niiza, Saitama. On October 11, 2024, the Japan Confederation of A- and H-Bomb Sufferers Organizations (Nihon Hidankyo), which he represents, was awarded the Nobel Peace Prize.

Early life He was born on 29 April 1932 in Manchuria in China, which was then under Japanese occupation as the puppet state of Manchukuo. He later moved to Nagasaki.

Atomic bombing of Nagasaki Tanaka was 13 years old when Nagasaki was bombed, and his home was around 3.2 kilometres from the hypocenter. He was blown through several panes of glass but did not suffer major injuries. He lost his grandfather, two uncles, an aunt, and a cousin in the bombing. He personally cremated his aunt in a nearby field after she died several days after the bombing.

Postwar career He was an associate professor in the school of engineering at Tohoku University.

Activism

Tanaka has been involved with hibakusha activism since 1974, and he became secretary-general of the Japan Confederation of A- and H-Bomb Sufferers Organizations in 2000. Tanaka has called upon the U.S. to offer an apology for the atomic bombings of Hiroshima and Nagasaki. He advocates for nuclear disarmament and holds that the use of nuclear weapons is never justified. He has also condemned North Korean nuclear tests.

He has also spoken out against discrimination against atomic bomb survivors and their descendants.After the 2011 Fukushima Daiichi nuclear disaster, Tanaka and Hidankyo called for the decommissioning of reactors that had already been shut down. Along with other atomic bomb survivors Tanaka attended the May 2016 speech of US President Barack Obama in Hiroshima, responding positively and praising it as being "wonderful", although he regretted that Obama had not been able to make progress towards a nuclear free world. After reading a translation of the speech and fully understanding the contents, he regretted praising the speech, stating that Obama's abstract language such as "Death fell from the sky" was unacceptable, given the bombing was a deliberate act by the US. In January 2017 he announced that he would retire in June at the Nikon Hidankyo General Meeting.

Illustrations

Worked examples

Example 1 — a first encounter with Terumi Tanaka

Start with the simplest possible case. Write down what Terumi Tanaka 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 Terumi Tanaka 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 Terumi Tanaka 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 Terumi Tanaka

In research: Terumi Tanaka 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 Terumi Tanaka 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: Terumi Tanaka is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1932 births, Academic staff of Tohoku University, Activists from Nagasaki Prefecture, so understanding it makes those chapters shorter.
In everyday life: Look for Terumi Tanaka 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 Terumi Tanaka in 20 minutes

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

Frequently asked questions

What is Terumi Tanaka in simple terms?

Why does Terumi Tanaka 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 Terumi Tanaka?

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 Terumi Tanaka.