ArticleslgStudy

science

James Allen Harker

James Allen Harker 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 James Allen Harker rather than just read about it. In short: James Allen Harker FLS (31 July 1847 – 19 December 1894) was an English entomologist, professor of natural history at the Royal Agricultural College in Cirencester, Gloucestershire from 1881 until his death. He was a fellow of the Linnean Society from 1883.

Key takeaways

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

Reference excerpt

James Allen Harker FLS (31 July 1847 – 19 December 1894) was an English entomologist, professor of natural history at the Royal Agricultural College in Cirencester, Gloucestershire from 1881 until his death. He was a fellow of the Linnean Society from 1883. He was also a sometime correspondent of Charles Darwin. He married in 1885 Lizzie Watson. Their sons were Oswald Allen Harker CBE (1886–1968) and Arthur William Allen Harker CBE (1890-1960). He died in 1894. After his death his widow had a successful career as an author.

References

Worked examples

Example 1 — a first encounter with James Allen Harker

Start with the simplest possible case. Write down what James Allen Harker 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 James Allen Harker 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 James Allen Harker 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 James Allen Harker

In research
James Allen Harker 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 James Allen Harker 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
James Allen Harker is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1847 births, 1894 deaths, Fellows of the Linnean Society of London, so understanding it makes those chapters shorter.
In everyday life
Look for James Allen Harker 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.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “James Allen Harker” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study James Allen Harker in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what James Allen Harker means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain James Allen Harker out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is James Allen Harker in simple terms?

James Allen Harker FLS (31 July 1847 – 19 December 1894) was an English entomologist, professor of natural history at the Royal Agricultural College in Cirencester, Gloucestershire from 1881 until his death. He was a fellow of the Linnean Society from 1883.

Why does James Allen Harker 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 James Allen Harker?

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 James Allen Harker.

Tags

  • 1847 births
  • 1894 deaths
  • Fellows of the Linnean Society of London

Keep exploring