engineering

Sakamoto Castle

Sakamoto Castle 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 Sakamoto Castle rather than just read about it. In short: Sakamoto Castle (坂本城, Sakamoto-jō) was a lakeside castle in the Sengoku period, located in Ōtsu, Shiga Prefecture, Japan. Akechi Mitsuhide was the commander of the castle.

Key takeaways

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

Reference excerpt

Sakamoto Castle (坂本城, Sakamoto-jō) was a lakeside castle in the Sengoku period, located in Ōtsu, Shiga Prefecture, Japan. Akechi Mitsuhide was the commander of the castle.

History After the Siege of Mount Hiei, Sakamoto was given to Akechi Mitsuhide who built Sakamoto Castle under orders from the warlord Oda Nobunaga because Sakamoto was a strategically important place to rule. Luís Fróis described the castle as the second best castle in Japan at the time. After the loss of Battle of Yamazaki, Mitsuhide tried to return to the castle but he was killed on the way. Surrounded by Toyotomi's army, Mitsuhide's adopted son Akechi Hidemitsu set fire to the castle and killed himself. In 1583, Sakamoto castle was given to Niwa Nagahide and he rebuilt the castle. In 1586, Asano Nagamasa abandoned the castle and moved to Ōtsu Castle by Toyotomi Hideyoshi's order. (Stones and materials were transferred to Ōtsu Castle.) Nowadays nothing remains of the original castle, and a statue of Akechi Mitsuhide stands in Sakamoto Castle's park. (Low stone wall remains in the Lake Biwa and can be seen when the water level drops.) A gate from Sakamoto Castle was relocated to Saikyō-ji Temple near the castle. (Akechi clan's tombs are also at Saikyō-ji Temple.)

Gallery

References

External links Sakamoto Castle by Otsu city official Archived 2011-06-16 at the Wayback Machine

Illustrations

Worked examples

Example 1 — a first encounter with Sakamoto Castle

Start with the simplest possible case. Write down what Sakamoto Castle 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 Sakamoto Castle 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 Sakamoto Castle 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 Sakamoto Castle

In research: Sakamoto Castle 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 Sakamoto Castle 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: Sakamoto Castle is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1570s establishments in Japan, Akechi clan, Buildings and structures completed in 1571, so understanding it makes those chapters shorter.
In everyday life: Look for Sakamoto Castle 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 Sakamoto Castle in 20 minutes

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

Frequently asked questions

What is Sakamoto Castle in simple terms?

Sakamoto Castle (坂本城, Sakamoto-jō) was a lakeside castle in the Sengoku period, located in Ōtsu, Shiga Prefecture, Japan. Akechi Mitsuhide was the commander of the castle.

Why does Sakamoto Castle 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 Sakamoto Castle?

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 Sakamoto Castle.