chemistry

Jānis Polis

Jānis Polis is a chemistry 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 Jānis Polis rather than just read about it. In short: Jānis Polis (25 June 1938 – 12 April 2011) was a Soviet and Latvian pharmacologist and the developer of one of the first methods of synthesis of rimantadine, which was discovered in 1963 by William W. Prichard of Du Pont & Co.

Key takeaways

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

Reference excerpt

Jānis Polis (25 June 1938 – 12 April 2011) was a Soviet and Latvian pharmacologist and the developer of one of the first methods of synthesis of rimantadine, which was discovered in 1963 by William W. Prichard of Du Pont & Co. He was born in Eleja parish, Latvia. On 6 February 2009, Polis was awarded the WIPO Award for Outstanding Inventors. Polis died in Riga, Latvia on 12 April 2011 at the age of 72.

References

Further reading Ieva Puķe (16–22 September 2010). "Talented but difficult" (PDF). Diena. Retrieved 13 April 2011. (in Latvian and English) "Janis Polis". Latvian Academy of Sciences. Archived from the original on 24 July 2011. Retrieved 13 April 2011.

Worked examples

Example 1 — a first encounter with Jānis Polis

Start with the simplest possible case. Write down what Jānis Polis claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Jānis Polis 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 Jānis Polis 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 Jānis Polis

In research: Jānis Polis appears in chemistry 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 Jānis Polis 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: Jānis Polis is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1938 births, 2011 deaths, 20th-century Latvian inventors, so understanding it makes those chapters shorter.
In everyday life: Look for Jānis Polis 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 Jānis Polis in 20 minutes

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

Frequently asked questions

What is Jānis Polis in simple terms?

Why does Jānis Polis matter?

Because it connects several chemistry 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 Jānis Polis?

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 Jānis Polis.