biology

George Alexander Ehrman

George Alexander Ehrman is a biology 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 George Alexander Ehrman rather than just read about it. In short: George Alexander Ehrman (2 February 1862 - 30 January 1926) was an American entomologist who specialised in Lepidoptera notably Papilionidae. Ehrman invented equipment which came into general use in the manufacture of blown and pressed glass for the Macbeth-Evans Glass Company and the United States Glass Company.

Key takeaways

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

Reference excerpt

George Alexander Ehrman (2 February 1862 - 30 January 1926) was an American entomologist who specialised in Lepidoptera notably Papilionidae. Ehrman invented equipment which came into general use in the manufacture of blown and pressed glass for the Macbeth-Evans Glass Company and the United States Glass Company. In later years he was employed in the Research Laboratory of the Mesta Machine Company. Financially secure Ehrman was able during his later life to devote himself to natural history including ornithology. He made extensive collections of the Lepidoptera and Coleoptera of western Pennsylvania then extended his collections worldwide. He specialised in Papilionidae, the genus Catocala, and the butterflies and moths of Liberia, and the beetle genus Cychrus and its allies. His collection of American und exotic Rhopalocera and Coleoptera was bequeathed to the Carnegie Museum of Natural History. The species described by him are listed by Holland (1927)

Works partial list

Ehrmann, G. A. (1895): Description of the female Papilio pelaus Fab. Entomological News 6(9), pp. [303-304] Ehrmann, G. A. (1902): A New Papilio from the Orient. Entomological News 13(9), pp. [291] Ehrmann, G. A. (1904): New forms of exotic Papilionidae Entomological News 15(6), pp. [214-215] Ehrmann, G. A. (1912): A new Papilio from Central AmericaCanadian Entomologist 44(8), pp. [244] Ehrmann, G. A. (1918): New exotic Papilios Lepidoptera (Boston) 2(11), pp. [82- 84] Ehrmann, G. A. (1919): New tropical American Papilios Lepidoptera (Boston) 3(2), pp. [10-11; (3)21-22] Ehrmann, G. A. (1919): A new tropical American Papilio Lepidoptera (Boston) 3(4), pp. [30-31] Ehrmann, G. A. (1919): New tropical American Papilios Lepidoptera (Boston) 3(5), pp. [36-38] Ehrmann, G. A. (1920): A new tropical American Papilio Lepidoptera (Boston) 4(2), pp. [13-14] Ehrmann, G. A. (1920): New exotic Papilionids. Bull. Brooklyn ent. Soc. 15, pp. [21-22] Ehrmann, G. A. (1920): Papilio pyrholochus, nov. spec. Lepidoptera (Boston) 4(3), pp. [20-21] Ehrmann, G. A. (1921): New exotic Papilios Lepidoptera (Boston) 5(1), pp. [02. Mrz] Ehrmann, G. A. (1921): Some new Papilios and Ornithoptera Lepidoptera (Boston) 5(2), pp. [17-19] Ehrmann, G. A. (1921): Some new Papilios and Ornithoptera. Lepidoptera 5(2), pp. [17-19]

References

Anonym 1926: [Ehrman, G. A.] Annals of the Carnegie Museum, Pittsburgh 16: 351–352 Holland, W. J. 1926: [Ehrman, G. A.] Entomological News, Philadelphia 37,: 95-96

Worked examples

Example 1 — a first encounter with George Alexander Ehrman

Start with the simplest possible case. Write down what George Alexander Ehrman claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 George Alexander Ehrman 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 George Alexander Ehrman 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 George Alexander Ehrman

In research: George Alexander Ehrman appears in biology 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 George Alexander Ehrman 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: George Alexander Ehrman is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1862 births, 1926 deaths, American entomologists, so understanding it makes those chapters shorter.
In everyday life: Look for George Alexander Ehrman 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 George Alexander Ehrman in 20 minutes

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

Frequently asked questions

What is George Alexander Ehrman in simple terms?

Why does George Alexander Ehrman matter?

Because it connects several biology 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 George Alexander Ehrman?

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 George Alexander Ehrman.