science

Pood

Pood 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 Pood rather than just read about it. In short: The pood (Russian: пуд, romanized: pud, IPA: [put], plural: pudi or pudy) is an obsolete Russian unit of mass equal to 40 funt (фунт, Russian pound). Since 1899, it has been set to approximately 16.38 kilograms (36.11 pounds).

Key takeaways

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

Reference excerpt

The pood (Russian: пуд, romanized: pud, IPA: [put], plural: pudi or pudy) is an obsolete Russian unit of mass equal to 40 funt (фунт, Russian pound). Since 1899, it has been set to approximately 16.38 kilograms (36.11 pounds). The pood was first mentioned in the 12th century.

Use in the past and present

The pood is first mentioned in documents dating to the 12th century. It is mentioned in the charter of Vsevolod Mstislavich, the prince of Novgorod, dating to 1134–1135. It is also mentioned in the chronicle of Novgorod under the year 1170. In 1899, the metric system was introduced into Russia and made obligatory in 1918. Together with other units of weight of the obsolete Russian weight measurement system, the Soviet Union officially abolished the pood in 1924. The term remained in widespread use until at least the 1940s. Its usage is preserved in modern Russian in certain specific cases, e.g., in reference to sports weights, such as traditional Russian kettlebells, cast in multiples and fractions of 16 kg (which is pood rounded to metric units). For example, a 24 kg kettlebell is commonly referred to as "one-and-half pood kettlebell" (polutorapudovaya girya). It is also sometimes used when reporting the amounts of bulk agricultural production, such as grains or potatoes.

Idioms An old Russian proverb reads, "You know a man when you have eaten a pood of salt with him" (Russian: Человека узнаешь, когда с ним пуд соли съешь). In modern colloquial Russian, the expression sto pudov (сто пудов) – 'a hundred poods,' an intentional play on the foreign "hundred percent" – imparts the ponderative sense of overwhelming weight to the declarative sentence it is added to. The generic meaning of "very serious" or "absolutely sure" has almost supplanted its original meaning of "very heavy weight." The adjective stopudovy and the adverb stopudovo are also used to convey the same sense of certainty. The word is also used in Polish idiomatically or as a proverb (with the original/strict meaning commonly forgotten): nudy na pudy (Polish for 'unsupportable boredoms', literally 'boredoms [that could be measured] in poods').

References

Sources Cardarelli, François (6 December 2012). Encyclopaedia of Scientific Units, Weights and Measures: Their SI Equivalences and Origins. Springer Science & Business Media. ISBN 978-1-4471-0003-4. Gyllenbok, Jan (12 April 2018). Encyclopaedia of Historical Metrology, Weights, and Measures: Volume 3. Birkhäuser. ISBN 978-3-319-66712-6. Treese, Steven A. (17 May 2018). History and Measurement of the Base and Derived Units. Springer. ISBN 978-3-319-77577-7.

External links Conversion factors from pood to other units of mass (contemporary and ancient)

Illustrations

Worked examples

Example 1 — a first encounter with Pood

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

In research: Pood 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 Pood 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: Pood is common in secondary-school and first-year university syllabi. It links to neighbouring topics Obsolete Russian units of measurement, Units of mass, so understanding it makes those chapters shorter.
In everyday life: Look for Pood 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 Pood in 20 minutes

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

Frequently asked questions

What is Pood in simple terms?

Why does Pood 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 Pood?

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 Pood.