science

Zaisho

Zaisho is a science 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 Zaisho rather than just read about it. In short: Zaisho is the name of a stony-iron pallasite meteorite whose fall in Japan in February 1898 was recorded by observers on the ground. Zaisho made landfall in the city of Kami, located in the prefecture of Kōchi on Shikoku Island.

Key takeaways

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

Reference excerpt

Zaisho is the name of a stony-iron pallasite meteorite whose fall in Japan in February 1898 was recorded by observers on the ground. Zaisho made landfall in the city of Kami, located in the prefecture of Kōchi on Shikoku Island. Zaisho weighs approximately 0.33kg (12oz) and exhibits a rare composition of primarily iron rich phosphoran olivine, and pyroxene. Zaisho also contains traces of stanfieldite, farringtonite, troilite, schreibersite, chromite, and mg-phosphate, albeit in smaller amounts. Notably, Zaisho is also one of two confirmed meteorite landings to take place on the island of Shikoku, and as of 2019 it remains one of only four known pallasite falls, along with Marjalahti, Mineo and Omolon. Currently, access to Zaisho is not available to the public as the main mass of the meteorite is being held in a private collection.

Worked examples

Example 1 — a first encounter with Zaisho

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

In research: Zaisho appears in science 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 Zaisho 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: Zaisho is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1898 in Japan, Meteorite falls, Meteorite stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Zaisho 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 Zaisho in 20 minutes

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

Frequently asked questions

What is Zaisho in simple terms?

Why does Zaisho matter?

Because it connects several science 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 Zaisho?

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 Zaisho.