physics

James M. Cork

James M. Cork 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 James M. Cork rather than just read about it. In short: James Murle Cork (July 9, 1894, Yale, Michigan – November 27, 1957, Ann Arbor, Michigan) was an American physicist, known for his research in nuclear physics and nuclear spectroscopy. Biography He graduated in 1911 from Yale High School in Yale, Michigan.

Key takeaways

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

Reference excerpt

James Murle Cork (July 9, 1894, Yale, Michigan – November 27, 1957, Ann Arbor, Michigan) was an American physicist, known for his research in nuclear physics and nuclear spectroscopy.

Biography He graduated in 1911 from Yale High School in Yale, Michigan. At the University of Michigan, he graduated in 1916 with a B.S., in 1917 with an M.S., and in 1922 with a Ph.D. From 1917 to 1918 he was a first lieutenant in the U.S. Army Signal Corps. He was from 1917 to 1919 an assistant physicist at the Bureau of Standards in Washington, D.C. and from 1919 to 1920 an assistant professor at Pennsylvania State College. In the department of physics of the University of Michigan he was from 1920 to 1922 an instructor, from 1922 to 1937 an associate professor, and from 1937 until his death in 1957 a full professor. After the attack on Pearl Harbor, Cork was from 1942 to 1946 a section member and research supervisor of the National Defense Research Committee (NDRC). He gained an international reputation for his research in nuclear physics and radioactivity. He was a consultant for Argonne National Laboratory and the Atomic Energy Commission (AEC). He was one of the assistant editors for the American Institute of Physics Handbook. Cork was elected in 1928 a fellow of the American Physical Society and in 1940 a fellow of the American Association for the Advancement of Science. He married Laurie Mae Kaufmann in 1918. They had two children.

Selected publications

Articles Cork, James M. (1919). "Airplane Antenna Constants". Scientific Papers of the Bureau of Standards. U.S. Government Printing Office: 199–213. —— (1923). "Characteristic L absorption of x-rays for elements of atomic numbers 62 to 77". Physical Review. 21 (3): 326–333. doi:10.1103/PhysRev.21.326. hdl:2027/mdp.39015076333312. ——; James, C.; Fogg, H. C. (1926). "The Concentration and Identification of the Element of Atomic Number 61". Proceedings of the National Academy of Sciences. 12 (12): 696–699. Bibcode:1926PNAS...12..696C. doi:10.1073/pnas.12.12.696. PMC 1084783. PMID 16587137. —— (1927). "LX.The crystal structure of some of the alums". The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science. 4 (23): 688–698. doi:10.1080/14786441008564371. Fox, Gerald W.; —— (1931). "The Regular Reflection of X-rays from Quartz Crystals Oscillating Piezoelectrically". Physical Review. 38 (8): 1420–1423. Bibcode:1931PhRv...38.1420F. doi:10.1103/PhysRev.38.1420. Witmer, R. B.; —— (1932). "The Measurement of X-Ray Emission Wave-Lengths by Means of the Ruled Grating". Physical Review. 42 (6): 743–748. Bibcode:1932PhRv...42..743W. doi:10.1103/PhysRev.42.743. —— (1932). "Laue Patterns from Thick Crystals at Rest and Oscillating Piezoelectrically". Physical Review. 42 (6): 749–752. Bibcode:1932PhRv...42..749C. doi:10.1103/PhysRev.42.749. ——; Lawrence, E. O. (1936). "The Transmutation of Platinum by Deuterons". Physical Review. 49 (11): 788–792. Bibcode:1936PhRv...49..788C. doi:10.1103/PhysRev.49.788. Lawson, J. L.; —— (1937). "The Radioactive Isotopes of Indium". Physical Review. 52 (6): 531–535. Bibcode:1937PhRv...52..531L. doi:10.1103/PhysRev.52.531. Kraus, J.; —— (1937). "Radioactive Isotopes of Palladium and Silver from Palladium". Physical Review. 52 (8): 763–768. Bibcode:1937PhRv...52..763K. doi:10.1103/PhysRev.52.763. Stewart, D.; Lawson, J.; —— (1937). "Induced Radioactivity in Strontium and Yttrium". Physical Review. 52 (9): 901–906. Bibcode:1937PhRv...52..901S. doi:10.1103/PhysRev.52.901. ——; Lawson, J. L. (1939). "Induced Radioactivity in Cadmium and Indium". Physical Review. 56 (4): 291–294. Bibcode:1939PhRv...56..291C. doi:10.1103/PhysRev.56.291. Lawson, J. L.; —— (1940). "The Radioactive Isotopes of Indium". Physical Review. 57 (11): 982–994. Bibcode:1940PhRv...57..982L. doi:10.1103/PhysRev.57.982. ——; Smith, Gail P. (1941). "Radioactive Isotopes of Barium from Cesium". Physical Review. 60 (7): 480–482. Bibcode:1941PhRv...60..480C. doi:10.1103/PhysRev.60.480. ——; Pidd, R. W. (1944). "The Absorption of Gamma-Radiation in Copper and Lead". Physical Review. 66 (9–10): 227–230. Bibcode:1944PhRv...66..227C. doi:10.1103/PhysRev.66.227. —— (1947). "Gamma-Radiation from Tantalum, Iridium, and Gold". Physical Review. 72 (7): 581–585. Bibcode:1947PhRv...72..581C. doi:10.1103/PhysRev.72.581. ——; Shreffler, R. G.; Fowler, C. M. (1948). "Neutron Induced Radioactivity in Certain Rare-Earth Elements". Physical Review. 74 (3): 240–243. Bibcode:1948PhRv...74..240C. doi:10.1103/PhysRev.74.240. ——; Shreffler, R. G.; Fowler, C. M. (1948). "Converted Gamma-Radiation from Silver, Cadmium, Indium, Praseodynium, and Rhenium". Physical Review. 74 (11): 1657–1659. Bibcode:1948PhRv...74.1657C. doi:10.1103/PhysRev.74.1657. ——; Rutledge, W. C.; Stoddard, A. E.; Branyan, C. E.; Leblanc, J. M. (1950). "Radioactivity from Enriched Isotopes of Cadmium". Physical Review. 79 (6): 938–939. Bibcode:1950PhRv...79..938C. doi:10.1103/PhysRev.79.938.

Books Wood, William Platt; Cork, James M. (1927). Pyrometry (1st ed.). McGraw-Hill. Cork, James M. (1937). Heat (1st ed.). J. Wiley & Sons. Cork, James M. (1946). Radioactivity and nuclear physics (1st ed.). Van Nostrand. 2nd edition, 1950 revised 3rd edition, 1957. ISBN 0442016956. Radioactivité et physique nuclêaire. Traduit par J.P. Bodet. Paris: Dunod. 1949.

References

Worked examples

Example 1 — a first encounter with James M. Cork

Start with the simplest possible case. Write down what James M. Cork 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 James M. Cork 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 James M. Cork 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 James M. Cork

In research: James M. Cork 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 James M. Cork 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: James M. Cork is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1894 births, 1957 deaths, 20th-century American physicists, so understanding it makes those chapters shorter.
In everyday life: Look for James M. Cork 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 James M. Cork in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what James M. Cork 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.
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Frequently asked questions

What is James M. Cork in simple terms?

James Murle Cork (July 9, 1894, Yale, Michigan – November 27, 1957, Ann Arbor, Michigan) was an American physicist, known for his research in nuclear physics and nuclear spectroscopy. Biography He graduated in 1911 from Yale High School in Yale, Michigan.

Why does James M. Cork 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 James M. Cork?

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 James M. Cork.