science

John Ewbank Leefe

John Ewbank Leefe 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 John Ewbank Leefe rather than just read about it. In short: John Ewbank Leefe FLS (1813–1889) was an English amateur botanist and vicar in the Church of England. He was a leading expert on the British willows (Salix).

Key takeaways

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

Reference excerpt

John Ewbank Leefe FLS (1813–1889) was an English amateur botanist and vicar in the Church of England. He was a leading expert on the British willows (Salix).

Education and career He was the son of Octavus Leefe of Richmond, Yorkshire, an alderman and magistrate, and his wife Mary Wright, daughter of Thomas Wright of Richmond. In 1831 he matriculated at Trinity College, Cambridge. He graduated there B.A. (24th Wrangler) in 1835 and M.A. in 1838. He was ordained a deacon (Oxford) in 1838 and became a priest in 1840. He became in 1841 a vicar at St Mary the Virgin, Saffron Walden (near the Audley End House and Gardens). From 1844 to 1849 he was a curate at Bishopwearmouth. From 1849 to 1882 he was the vicar of Cresswell, Northumberland. He retired to Highcliff, Coatham, Redcar. Leefe was elected a Fellow of the Linnean Society on 19 November 1868. He was a member of the Tynesides Naturalists' Field Club (founded in 1846), became their vice-president, and president from 1873 to 1874. He collected in various locations in England, the north of Wales, the Scottish Borderlands, and the far north of Scotland. Most of his letters and botanical specimens are at Kew. He recorded rainfall and temperature data at Cresswell until 1881.

Family He married Maria Favell on 6 August 1845 in Crosthwaite. They had 5 children, James Octavian (1846–1846), Constance Maria (1848–1875), John Beckwith (1849–1922), Henry Ewbank (1851–1901), and Charles Octavius (1854–1897). John Beckwith Leefe became a general in the British Army. Charles Octavius Leefe became an executive engineer in the British Raj's Indian Civil Service and died of cholera.

Selected publications Leefe, J. E. (1844). "XIV.Remarks on some of curious Metamorphoses of the Pistil of Salix caprea". Transactions of the Botanical Society of Edinburgh. 1 (1–4): 113–114. doi:10.1080/03746604409467518. Leefe, J. E. (1844). "XIX.—On the Groups of Triandræ and Fragiles of the Genus Solix". Transactions of the Botanical Society of Edinburgh. 1 (1–4): 155–163. doi:10.1080/03746604409467523.

References

Worked examples

Example 1 — a first encounter with John Ewbank Leefe

Start with the simplest possible case. Write down what John Ewbank Leefe 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 John Ewbank Leefe 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 John Ewbank Leefe 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 John Ewbank Leefe

In research: John Ewbank Leefe 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 John Ewbank Leefe 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: John Ewbank Leefe is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1813 births, 1889 deaths, 19th-century English Anglican priests, so understanding it makes those chapters shorter.
In everyday life: Look for John Ewbank Leefe 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 John Ewbank Leefe in 20 minutes

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

Frequently asked questions

What is John Ewbank Leefe in simple terms?

John Ewbank Leefe FLS (1813–1889) was an English amateur botanist and vicar in the Church of England. He was a leading expert on the British willows (Salix).

Why does John Ewbank Leefe 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 John Ewbank Leefe?

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 John Ewbank Leefe.