science

Marfa Sobakina

Marfa Sobakina 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 Marfa Sobakina rather than just read about it. In short: Marfa Vasilyevna Sobakina (Russian: Марфа Васильевна Собакина; 1552 – 13 November 1571) was the tsaritsa of Russia as the third wife of Ivan the Terrible, the tsar of all Russia, from October 1571 until her death the next month. Life The daughter of a Novgorod-based merchant, Vasiliy Sobakin, Marfa was selected by Ivan among twelve marriage finalists.

Key takeaways

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

Reference excerpt

Marfa Vasilyevna Sobakina (Russian: Марфа Васильевна Собакина; 1552 – 13 November 1571) was the tsaritsa of Russia as the third wife of Ivan the Terrible, the tsar of all Russia, from October 1571 until her death the next month.

Life The daughter of a Novgorod-based merchant, Vasiliy Sobakin, Marfa was selected by Ivan among twelve marriage finalists. A few days after her selection, Marfa began to succumb to a mysterious ailment. It was rumoured that she was unintentionally poisoned by her mother, who gave her a potion supposedly meant to increase her fertility. Despite rapidly losing weight and barely standing, Marfa was nonetheless married to Ivan on 28 October 1571 in Aleksandrovska Sloboda. Marfa died sixteen days later. Her death increased her husband's paranoia, because she died in what was meant to be an impregnable fortress filled with loyal subjects. Ivan, remembering the death of his first wife, immediately suspected poison and put to death many of his subjects, including Mikail Temrjuk (brother to the Tsar's previous wife) who was impaled. Marfa was a cousin to Malyuta Skuratov.

Legacy The story of Marfa's selection and death is the base of the historical verse drama The Tsar's Bride by Lev Mei. The opera by the same name by Nikolai Rimsky-Korsakov is repertory opera in Russia.

References

Troyat, Henri Ivan le Terrible. Flammarion, Paris, 1982 de Madariaga, Isabel Ivan the Terrible. Giulio Einaudi editore, 2005

Illustrations

Worked examples

Example 1 — a first encounter with Marfa Sobakina

Start with the simplest possible case. Write down what Marfa Sobakina 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 Marfa Sobakina 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 Marfa Sobakina 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 Marfa Sobakina

In research: Marfa Sobakina 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 Marfa Sobakina 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: Marfa Sobakina is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1552 births, 1571 deaths, 16th-century Russian people, so understanding it makes those chapters shorter.
In everyday life: Look for Marfa Sobakina 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 Marfa Sobakina in 20 minutes

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

Frequently asked questions

What is Marfa Sobakina in simple terms?

Why does Marfa Sobakina 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 Marfa Sobakina?

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 Marfa Sobakina.