physics

Marion Eppley

Marion Eppley is a physics 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 Marion Eppley rather than just read about it. In short: Marion Eppley (19 June 1883, West Orange, New Jersey – 22 November 1960, Oyster Bay, New York) was an American physical chemist. Biography Eppley received from Princeton University his B.S. in 1906, M.A. in 1912, and Ph.D. in 1919.

Key takeaways

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

Reference excerpt

Marion Eppley (19 June 1883, West Orange, New Jersey – 22 November 1960, Oyster Bay, New York) was an American physical chemist.

Biography Eppley received from Princeton University his B.S. in 1906, M.A. in 1912, and Ph.D. in 1919. He married his first wife, Ethelberta Pyne née Russell, on 6 May 1909 in Trinity Church, Princeton.

The First World War cut off the US supply of standard cells from Germany that were needed for precise calibration of potentiometers and other electrical manufacturing instruments. At Princeton, Captain Eppley had begun experimentation in the manufacture of these cells and in 1917 launched the Eppley Laboratory in Newport, Rhode Island, to produce them. During WW I, Eppley was a lieutenant commander in the U.S. Navy and after the war became a naval reserve officer. In 1941 he was recalled to active duty as a captain. His research dealt with improvements in cadmium storage batteries, as well as thermal radiation instrumentation. He directed the Eppley Research Laboratory until his death in 1960. In 1947 he established the Eppley Foundation for Research, and his will created a charitable trust to support the Foundation and the Marion Eppley Wildlife Refuge. The Eppley Foundation for Research should not be confused with the Eppley Foundation founded in Omaha, Nebraska by Eugene C. Eppley. Marion Eppley was awarded the Howard N. Potts Medal in 1927. For his service in WW II, he was awarded the Legion of Merit. He was elected a Fellow of the American Institute of Chemists, the American Physical Society, the New York Academy of Sciences, and the Institute of Electrical and Electronics Engineers. He was introduced to Newport society by his first wife, who was a member of the Lewis Morris and Moses Taylor families of Newport. His first wife died in 1952 and he married his second wife in 1953. Sometime during the 1940s, Eppley purchased from the estate of Samuel Powel, a son of Colonel John Hare Powel and a member of the Samuel Powel family, a portrait of George Washington painted by Joseph Wright. Eppley and his first wife hung the painting at their house in Newport and later at their residence on Long Island. In 1972, Eppley's widow, Constance Rivington Russell Earle, who married Walter K. Earle after Captain Epley died, donated the portrait to the Historical Society of Pennsylvania.

Legacy

The fish Parotocinclus eppleyi Schaefer & Provenzano, 1993 was named in his honor.

References

External links Eppley, Marion (3 March 1917). "Anti-submarine patrol". Scientific American. 116 (9): 222–223. Bibcode:1917SciAm.116..222E. doi:10.1038/scientificamerican03031917-222. "The Captain Marion Eppley Residence". Old Long Island (oldlongisland.com). 2 May 2016. "The Acropolis of Newport". halfpuddinghalfsauce.blogspot.com. 17 April 2012. "Marion Eppsley's 'Beacon Rock' Estate, Newport RI (photograph digitized: 2011)". Robert Yarnall Richie Photograph Collection (smu.edu). Obituary at Newspapers.com

Illustrations

Worked examples

Example 1 — a first encounter with Marion Eppley

Start with the simplest possible case. Write down what Marion Eppley claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 Marion Eppley 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 Marion Eppley 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 Marion Eppley

In research: Marion Eppley appears in physics 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 Marion Eppley 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: Marion Eppley is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1883 births, 1960 deaths, 20th-century American chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Marion Eppley 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 Marion Eppley in 20 minutes

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

Frequently asked questions

What is Marion Eppley in simple terms?

Marion Eppley (19 June 1883, West Orange, New Jersey – 22 November 1960, Oyster Bay, New York) was an American physical chemist. Biography Eppley received from Princeton University his B.S. in 1906, M.A. in 1912, and Ph.D. in 1919.

Why does Marion Eppley matter?

Because it connects several physics 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 Marion Eppley?

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 Marion Eppley.