science

Juryeonggu

Juryeonggu 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 Juryeonggu rather than just read about it. In short: Juryeonggu (Korean: 주령구; Hanja: 酒令具) was a 14-sided die from the Unified Silla period, which was excavated from Donggung Palace and Wolji Pond. It was made of oak and had 6 square faces and 8 hexagonal faces.

Key takeaways

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

Reference excerpt

Juryeonggu (Korean: 주령구; Hanja: 酒令具) was a 14-sided die from the Unified Silla period, which was excavated from Donggung Palace and Wolji Pond. It was made of oak and had 6 square faces and 8 hexagonal faces. (Note that the hexagonal faces are not regular hexagons.) The inscriptions on each face are thought to be penalties in a drinking game involving the die. The original was destroyed when trying to remove its moisture in a microwave oven.

Penalties (listed on the faces)

The six square faces Laughing loudly after finishing a glass of alcohol (飮盡大笑) Drinking three cups of alcohol at once, or drinking three cups and taking one step (三盞一去) Singing and drinking alone (自唱自飲) Dancing without making a sound after drinking alcohol (禁聲作舞) Multiple people hitting each other's noses (衆人打鼻) Remaining still even when many people gang up on you and play tricks (有犯空過)

The eight hexagonal faces Do not throw away even if they are dirty (醜物莫放) Pouring out two cups of wine (兩盞則放) Drinking all the alcohol with the arms bent (曲臂則盡) Asking someone to sing at will (任意請歌) Staying still even when your face is tickled (弄面孔過) Singing the song 'Wolgyeong' (月鏡一曲) Reciting a Poem (空詠詩過) Jachang Gwaeraeman (自唱怪來晩) - Singing the song 'Gwaeraeman'

Likelihood of falling on any face The ratio of the area of the square faces to the area of the hexagonal faces is 6.25 to 6.265, making it almost equally likely to fall on any face. (The probability of falling on any face is roughly equal to 1/14). This almost equal likelihood makes it suitable as a die.

See also Donggung Palace and Wolji Pond Unified Silla Korean drinking culture Drinking game Gyeongju National Museum

References

Illustrations

Worked examples

Example 1 — a first encounter with Juryeonggu

Start with the simplest possible case. Write down what Juryeonggu 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 Juryeonggu 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 Juryeonggu 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 Juryeonggu

In research: Juryeonggu 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 Juryeonggu 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: Juryeonggu is common in secondary-school and first-year university syllabi. It links to neighbouring topics Alcohol in Korea, Asian archaeology stubs, Culture of Silla, so understanding it makes those chapters shorter.
In everyday life: Look for Juryeonggu 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 Juryeonggu in 20 minutes

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

Frequently asked questions

What is Juryeonggu in simple terms?

Why does Juryeonggu 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 Juryeonggu?

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 Juryeonggu.