astronomy

Jermain G. Porter

Jermain G. Porter is a astronomy 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 Jermain G. Porter rather than just read about it. In short: Jermain Gildersleeve Porter (January 8, 1852 – April 14, 1933) was an American astronomer and opponent of the theory of relativity. Porter was born at Buffalo, New York.

Key takeaways

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

Reference excerpt

Jermain Gildersleeve Porter (January 8, 1852 – April 14, 1933) was an American astronomer and opponent of the theory of relativity. Porter was born at Buffalo, New York. He studied at Hamilton College, was employed by the United States Coast and Geodetic Survey in 1878, and from 1884 to 1930 was director of the Cincinnati Observatory and professor at the University of Cincinnati. He observed comets and nebulae, but gained a name mainly through his three star catalogs (1895–1905) and through his studies of the stars motion, collected in the Catalog of Proper Motion Stars , I – IV (1915–18), Publications of the Cincinnati Observatory No. 18. He also authored Variation of Latitude 1899–1906 (1908) and The Stars in Song and Legend (1901). Together with Elliott Smith, he published the Catalog of 4683 Stars of the Epoch 1900, Publications of the Cincinnati Observatory, No. 193, in which he also stated his own movements. He also made a name for himself as an opponent of the theory of relativity.

Selected publications Historical Sketch of the Cincinnati Observatory 1843-1893 (1893) The Stars in Song and Legend (1901) The Overthrow of Newton's Theory of Gravitation (1920) The Relativity Deflection of Light: Facts versus Theory (1929) Recent Textbooks and Relativity (1927)

References

Illustrations

Worked examples

Example 1 — a first encounter with Jermain G. Porter

Start with the simplest possible case. Write down what Jermain G. Porter claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Jermain G. Porter 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 Jermain G. Porter 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 Jermain G. Porter

In research: Jermain G. Porter appears in astronomy 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 Jermain G. Porter 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: Jermain G. Porter is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1852 births, 1933 deaths, American astronomer stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Jermain G. Porter 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 Jermain G. Porter in 20 minutes

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

Frequently asked questions

What is Jermain G. Porter in simple terms?

Jermain Gildersleeve Porter (January 8, 1852 – April 14, 1933) was an American astronomer and opponent of the theory of relativity. Porter was born at Buffalo, New York.

Why does Jermain G. Porter matter?

Because it connects several astronomy 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 Jermain G. Porter?

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 Jermain G. Porter.