science

Wolter Edward Hellén

Wolter Edward Hellén 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 Wolter Edward Hellén rather than just read about it. In short: Wolter Edward Hellén (9 March 1890 – 31 December 1979) was a Finnish entomologist, best known for his taxonomic work on parasitoid wasps of the family Ichneumonidae. Biography Hellén was born in Helsinki on 9 March 1890 and died on 31 December 1979 at the age of 89.

Key takeaways

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

Reference excerpt

Wolter Edward Hellén (9 March 1890 – 31 December 1979) was a Finnish entomologist, best known for his taxonomic work on parasitoid wasps of the family Ichneumonidae.

Biography Hellén was born in Helsinki on 9 March 1890 and died on 31 December 1979 at the age of 89. He was married to Mary Linnea Hellén.

Taxonomic work In 1915, Hellén established several higher taxa within the hymenopteran subfamily Pimplinae. He is credited as the author of at least three tribes of apocritan wasps:

Delomeristini Ephialtini Polysphinctini

References

Worked examples

Example 1 — a first encounter with Wolter Edward Hellén

Start with the simplest possible case. Write down what Wolter Edward Hellén 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 Wolter Edward Hellén 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 Wolter Edward Hellén 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 Wolter Edward Hellén

In research: Wolter Edward Hellén 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 Wolter Edward Hellén 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: Wolter Edward Hellén is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1890 births, 1979 deaths, Finnish entomologists, so understanding it makes those chapters shorter.
In everyday life: Look for Wolter Edward Hellén 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 Wolter Edward Hellén in 20 minutes

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

Frequently asked questions

What is Wolter Edward Hellén in simple terms?

Wolter Edward Hellén (9 March 1890 – 31 December 1979) was a Finnish entomologist, best known for his taxonomic work on parasitoid wasps of the family Ichneumonidae. Biography Hellén was born in Helsinki on 9 March 1890 and died on 31 December 1979 at the age of 89.

Why does Wolter Edward Hellén 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 Wolter Edward Hellén?

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 Wolter Edward Hellén.