science

Khwaeng

Khwaeng 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 Khwaeng rather than just read about it. In short: A khwaeng (Thai: แขวง, pronounced [kʰwɛ̌ːŋ]) is an administrative subdivision used in the fifty districts of Bangkok and a few other city municipalities in Thailand. Currently, there are 180 khwaeng in Bangkok.

Key takeaways

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

Reference excerpt

A khwaeng (Thai: แขวง, pronounced [kʰwɛ̌ːŋ]) is an administrative subdivision used in the fifty districts of Bangkok and a few other city municipalities in Thailand. Currently, there are 180 khwaeng in Bangkok. A khwaeng is roughly equivalent to a tambon in other provinces of Thailand, smaller than an amphoe (district). With the creation of the special administrative area of Bangkok in 1972, the tambon within the area of the new administrative entity was converted into khwaeng. The common English translation for khwaeng is subdistrict. Historically, in some regions of the country khwaeng referred to subdivisions of a province (then known as mueang, predating the modern term changwat), while in others they were called amphoe. Administrative reforms at the beginning of the 20th century standardized them to the term amphoe.

Khwaeng of Bangkok

Khwaeng in city municipalities

Illustrations

Worked examples

Example 1 — a first encounter with Khwaeng

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

In research: Khwaeng 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 Khwaeng 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: Khwaeng is common in secondary-school and first-year university syllabi. It links to neighbouring topics Subdivisions of Thailand, Types of administrative division, so understanding it makes those chapters shorter.
In everyday life: Look for Khwaeng 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 Khwaeng in 20 minutes

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

Frequently asked questions

What is Khwaeng in simple terms?

Why does Khwaeng 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 Khwaeng?

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 Khwaeng.