engineering

Fusuma

Fusuma is a engineering 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 Fusuma rather than just read about it. In short: In Japanese architecture, fusuma (襖) are vertical rectangular panels which can slide from side to side to redefine spaces within a room, or act as doors. They typically measure about 90 cm (2 ft 11 in) wide by 180 cm (5 ft 11 in) tall, the same size as a tatami mat, and are 2–3 cm (0.79–1.18 in) thick.

Key takeaways

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

Reference excerpt

In Japanese architecture, fusuma (襖) are vertical rectangular panels which can slide from side to side to redefine spaces within a room, or act as doors. They typically measure about 90 cm (2 ft 11 in) wide by 180 cm (5 ft 11 in) tall, the same size as a tatami mat, and are 2–3 cm (0.79–1.18 in) thick. The heights of fusuma have increased in recent years due to an increase in average height of the Japanese population, and a 190 cm (6 ft 3 in) height is now common. In older constructions, they are as small as 170 cm (5 ft 7 in) high. They consist of a lattice-like wooden understructure covered in cardboard and a layer of paper or cloth on both sides. They typically have a black lacquer border and a round finger catch. Historically, fusuma were painted, often with scenes from nature such as mountains, forests or animals. Today, many feature plain mulberry paper, or have industrially-printed graphics of fans, autumn leaves, cherry blossom, trees, or geometric graphics. Patterns for children featuring popular characters can also be purchased. Both fusuma and shōji are room dividers that run on wooden rails at the top and bottom. The upper rail is called a kamoi (鴨居; lit. "duck's place"), and the lower is called a shikii (敷居). Traditionally these were waxed, but nowadays they usually have a vinyl lubricating strip to ease movement of the fusuma and shōji. Fusuma are typically made of opaque cloth or paper, while shōji are made of sheer, translucent paper. Fusuma and shōji, along with tatami straw mats (for the floor), make up a typical Japanese room.

See also List of partitions of traditional Japanese architecture Shōji

References

External links Media related to Fusuma at Wikimedia Commons English site explaining all about fusuma, with diagrams and photos Archived 2016-10-19 at the Wayback Machine Momoyama, Japanese Art in the Age of Grandeur, an exhibition catalog from The Metropolitan Museum of Art (fully available online as PDF), which contains material on fusuma

Illustrations

Worked examples

Example 1 — a first encounter with Fusuma

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

In research: Fusuma appears in engineering 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 Fusuma 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: Fusuma is common in secondary-school and first-year university syllabi. It links to neighbouring topics Doors, Japanese architectural features, Japanese architectural styles, so understanding it makes those chapters shorter.
In everyday life: Look for Fusuma 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 Fusuma in 20 minutes

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

Frequently asked questions

What is Fusuma in simple terms?

Why does Fusuma matter?

Because it connects several engineering 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 Fusuma?

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 Fusuma.