earth science

Henry Carvill Lewis

Henry Carvill Lewis is a earth 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 Henry Carvill Lewis rather than just read about it. In short: Henry Carvill Lewis (November 16, 1853 – July 21, 1888) was an American geologist and mineralogist. Career Lewis was born in Philadelphia on November 16, 1853, and was educated at the University of Pennsylvania.

Key takeaways

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

Reference excerpt

Henry Carvill Lewis (November 16, 1853 – July 21, 1888) was an American geologist and mineralogist.

Career Lewis was born in Philadelphia on November 16, 1853, and was educated at the University of Pennsylvania. He received his Masters of Arts Degree in 1876 and became attached to the Geological Survey of Pennsylvania in 1879. He served for three years as a volunteer member, and during this term he became greatly interested in the study of glacial phenomena. In 1880 he was chosen professor of mineralogy in the Philadelphia Academy of Natural Sciences, and in 1883 he was appointed to the chair of geology in Haverford College, Pennsylvania. He was elected as a member to the American Philosophical Society in 1881. During the winters of 1885 to 1887 he studied petrology under HF Rosenbusch at Heidelberg, and during the summers he investigated the glacial geology of northern Europe and the British Isles. His observations in North America, where he had studied under Professor G.F. Wright, Professor T.C. Chamberlin and Warren Upham, had demonstrated the former extension of land-ice, and the existence of great terminal moraines. In 1884 his Report on the Terminal Moraine in Pennsylvania and Western New York was published: a work containing much information on the limits of the North American ice-sheet. In Britain he sought to trace in like manner the southern extent of the terminal moraines formed by British ice-sheets, but before his conclusions were matured, he died from typhoid fever at Manchester, England on July 21, 1888. He was buried at the churchyard of Christ Church, Walmsley. The results of his observations were published in 1894, entitled Papers and Notes on the Glacial Geology of Great Britain and Ireland, edited by Dr HW Crosskey.

Psychical research Lewis took interest in investigating paranormal claims. In 1886, he attended séances of the medium William Eglinton and detected him in fraud. The exposure was published in the Proceedings of the Society for Psychical Research in 1887.

Publications Primitive Industry with Charles Conrad Abbott (1881) Report on the Terminal Moraine in Pennsylvania and Western New York (1884) Papers and Notes on the Glacial Geology of Great Britain and Ireland (1894) The Alleged Physical Phenomena of Spiritualism: An Account of Two Séances (1887) Papers and Notes on the Genesis and Matrix of the Diamond (1897)

References This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Lewis, Henry Carvill". Encyclopædia Britannica. Vol. 16 (11th ed.). Cambridge University Press. p. 523.

See Prof. Henry Carvill Lewis and his Work in Glacial Geology, by Warren Upham, Amer. Geol. vol. ii. (Dec. 1888) p. 371, with portrait.

Illustrations

Worked examples

Example 1 — a first encounter with Henry Carvill Lewis

Start with the simplest possible case. Write down what Henry Carvill Lewis claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth 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 Henry Carvill Lewis 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 Henry Carvill Lewis 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 Henry Carvill Lewis

In research: Henry Carvill Lewis appears in earth 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 Henry Carvill Lewis 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: Henry Carvill Lewis is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1853 births, 1888 deaths, American mineralogists, so understanding it makes those chapters shorter.
In everyday life: Look for Henry Carvill Lewis 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 Henry Carvill Lewis in 20 minutes

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

Frequently asked questions

What is Henry Carvill Lewis in simple terms?

Henry Carvill Lewis (November 16, 1853 – July 21, 1888) was an American geologist and mineralogist. Career Lewis was born in Philadelphia on November 16, 1853, and was educated at the University of Pennsylvania.

Why does Henry Carvill Lewis matter?

Because it connects several earth 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 Henry Carvill Lewis?

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 Henry Carvill Lewis.