science

KVN-49

KVN-49 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 KVN-49 rather than just read about it. In short: KVN-49 (Russian: КВН-49) or Kenigson, Varshavskiy, Nikolayevskiy Mk. 1949 was a black-and-white TV set released in 1949 and on the market in the USSR until 1960, with some minor modifications. It was the first TV set ever mass-produced in the USSR.

Key takeaways

KVN-49 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect KVN-49 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of KVN-49 from memory before moving on to harder problems.

Reference excerpt

KVN-49 (Russian: КВН-49) or Kenigson, Varshavskiy, Nikolayevskiy Mk. 1949 was a black-and-white TV set released in 1949 and on the market in the USSR until 1960, with some minor modifications. It was the first TV set ever mass-produced in the USSR.

Specifications Television tube - 18LK1B (Russian: 18ЛК1Б) with round mirror, without an ion trap Ray focusing and deviation by a magnetic field, 3 coils (rows forming, framing and focusing) Image size - 105х140 mm Aspect ratio - 4:3 Audio output - 1 W Additional equipment - plastic magnifying lens filled with distilled water or glycerol Power draw - 200 W (КВН-49-4), 216 (КВН-49-А and -Б) Dimensions - 380х490х400 mm Weight - 29 kg

Mods "КВН-49-1" - 1948 - 1950 "КВН-49-А" - 1950 - 1952 "КВН-49-Б" - 1952 - 1955 "КВН-49-4" - 1953 - 1958 "КВН-49-М" - 1954 - 1955 "КВН-49-4(А) first release" - 1955 - 1959 "КВН-49-4(А) second release" - 1959 - 1960 In 1962 KVN-49 production was finally stopped, and the factory which made it, the ARZ factory (Alexandrovskiy RadioZavod), began to produce a different TV set called the Record (Рекорд). Over its history, as many as 2.5 million KVNs were produced.

References and notes

External links (in Russian) KVN-49-4

Illustrations

Worked examples

Example 1 — a first encounter with KVN-49

Start with the simplest possible case. Write down what KVN-49 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 KVN-49 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 KVN-49 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 KVN-49

In research: KVN-49 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 KVN-49 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: KVN-49 is common in secondary-school and first-year university syllabi. It links to neighbouring topics European television stubs, Goods manufactured in the Soviet Union, Science and technology in the Soviet Union, so understanding it makes those chapters shorter.
In everyday life: Look for KVN-49 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 KVN-49 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what KVN-49 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 KVN-49 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is KVN-49 in simple terms?

Why does KVN-49 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 KVN-49?

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 KVN-49.