physics

Suekichi Kinoshita

Suekichi Kinoshita 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 Suekichi Kinoshita rather than just read about it. In short: Suekichi Kinoshita (Japanese: 木下季吉, Kinoshita Suekichi, 14 January 1877 – 28 November 1934) was a Japanese experimental physicist and pioneer in radioactivity. His main contribution include the first observation of alpha particles using nuclear emulsion photography.

Key takeaways

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

Reference excerpt

Suekichi Kinoshita (Japanese: 木下季吉, Kinoshita Suekichi, 14 January 1877 – 28 November 1934) was a Japanese experimental physicist and pioneer in radioactivity. His main contribution include the first observation of alpha particles using nuclear emulsion photography.

Education and career Kinoshita was the second son in an intellectual family, where his father Sukeyuki Kinoshita was a government official. His younger brother Kumao Kinoshita (1881–1947) was a marine biologist. Kinoshita studied physics at the Tokyo Imperial University (now University of Tokyo), graduating in 1902. He left Japan and first worked as an intern under Woldemar Voigt at the University of Göttingen. He then visited Ernest Rutherford's group at the Victoria University of Manchester (now University of Manchester) in the UK, where he stayed from 1907 to 1909. His groundbreaking research on alpha particles, based on the work done at Manchester, was first presented at the meeting of the British Science Association in Winnipeg in 1909, and was published shortly afterward in 1910. Upon returning to Japan, he taught physics at the Tokyo Imperial University from 1914 to 1933. Kinoshita was awarded the Imperial Prize of the Japan Academy in 1923 for his work on radioactive particles.

Further reading Collection of articles by and about Suekichi Kinoshita

References

Illustrations

Worked examples

Example 1 — a first encounter with Suekichi Kinoshita

Start with the simplest possible case. Write down what Suekichi Kinoshita 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 Suekichi Kinoshita 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 Suekichi Kinoshita 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 Suekichi Kinoshita

In research: Suekichi Kinoshita 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 Suekichi Kinoshita 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: Suekichi Kinoshita is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1877 births, 1935 deaths, 20th-century Japanese physicists, so understanding it makes those chapters shorter.
In everyday life: Look for Suekichi Kinoshita 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 Suekichi Kinoshita in 20 minutes

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

Frequently asked questions

What is Suekichi Kinoshita in simple terms?

Why does Suekichi Kinoshita 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 Suekichi Kinoshita?

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 Suekichi Kinoshita.