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Volume 27

Issue 9 | Dec 1959 | pp. 617-682

Issue 8 | Nov 1959 | pp. 539-616

Issue 7 | Oct 1959 | pp. 457-538

Issue 6 | Sep 1959 | pp. 377-456

Issue 5 | May 1959 | pp. 289-375

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Issue 1 | Jan 1959 | pp. 1-68

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Select this Article		Two Contrasting Theories of Capillary Action Ernest K. Chapin American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 617 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract Two theories regarding the mechanism of the rise of a liquid in a capillary tube appear in current textbooks of physics and physical chemistry. In one theory the rise is attributed to hydrostatic pressure; in the other, the liquid is drawn up the tube by a climbing meniscus. Evidence is presented in favor of the latter theory.

Select this Article		On Accidental Degeneracy in Classical and Quantum Mechanics Harold V. McIntosh American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 620 \| Cited 16 times Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract The theory of accidental degeneracy is surveyed, particular attention being paid to the connection between the accidental degeneracy of the two-dimensional isotropic harmonic oscillator and the theory of angular momentum.

Select this Article		Early Development of Particle Accelerators M. Stanley Livingston American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 626 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract Professor Ernest O. Lawrence of the University of California conceived the idea of the cyclotron in 1929 and reported the principle in Science in 1930. The first successful experimental demonstration of cyclotron resonance was by Livingston in a Doctorate thesis completed in April, 1931, using a 4-in. pole magnet and producing H₂⁺ ions of 80 000 ev energy. By late 1931 Lawrence and Livingston completed an 11-in. cyclotron which produced H⁺ ions of 1.2 Mev, and which was used with others in the laboratory for disintegration experiments. By late 1932 the “27-in.” cyclotron was completed and was in service for research experiments; the energy and intensity were steadily increased during 1933 and 1934 and both H₂⁺ and D⁺ ions of up to 5 Mev energy became available. During these early years many young scientists joined the group to do research on disintegration reactions, neutron properties, and induced radioactivity, under the stimulating leadership of Professor Lawrence.

Select this Article		Evaluation of High School Physics Courses by College Students Haym Kruglak American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 630 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract Physics students at Western Michigan University rated their high school physics course and instructor. The data were used to identify the outstanding instructors of the area and to reveal their methods. There was a strong relationship between the ratings of the instructors and the ratings of the high school physics course as a preparation for college science courses. There was a significant difference in the general college physics grade distributions of students with and without high school physics.

Select this Article		Lunar-Solar Perturbations of an Earth Satellite Leon Blitzer American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 634 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract The influence of the sun and moon on the orbit of a near satellite of the earth is investigated, and it is shown that the principal effect is a precession of the orbit plane about the pole of the ecliptic, analogous to the precession of the equinoxes. The precessional rate increases with orbit size and eccentricity and decreases with orbit inclination to the equator. For orbits close to the earth the lunar-solar precessional motion is only about 10⁻⁴ that due to the earth's oblateness. Radial perturbations resulting from the attractions of the sun and moon are similarly extremely small, being of the order of one meter. The induced radial oscillations exhibit twice the frequency of the satellite's orbital motion around the earth, analogous to the twice daily motion of the tides. To second-order terms in the orbit eccentricity the expressions derived herein are in exact agreement with the astronomical treatments for the special case of the perturbations of the moon's orbit due to the sun.

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BROWSE VOLUMES

Dec 1959

Volume 27, Issue 9, pp. 617-682

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Select this Article		Improvement to the Franck-Hertz Experiment John W. Dewdney American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 645 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract Bernheim, Gossard, and Pound have devised a modification of the Franck-Hertz experiment in which the traditional peaks are displayed on an oscilloscope. Minor sophistications in their method make possible the display of 25 or more maxima.

Select this Article		Baccalaureate Origins of Ph.D. Physicists B. Richard Siebring and Duane H. Schwahn American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 647 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract Using the data gathered by the National Academy of Sciences about the baccalaureate origin of Ph.D. physicists for the periods 1936–1945, 1946–1950, and 1951–1955, the authors detected certain trends in the undergraduate training of Ph.D. physicists. It was found that the undergraduate training of physicists who earned doctorates during the years covered by this study was concentrated in a small proportion of this country's institutions of higher education. This concentration in the top institutions was found to be increasing. The North Central states lost the lead in the undergraduate training of Ph.D. physicists to the Northeastern states. This is true both numerically and percentagewise. In terms of percentage contribution, the trend is toward the increasing influence of the technical schools (up 4.75%) rather than the colleges (down 5.2%) and universities (up 0.8%). The Ph.D. granting institutions have led the nongranting Ph.D. institutions over this time span and are increasing their percentage contribution. There is a slow trend from the privately controlled to publicly controlled institutions.

Select this Article		One-Dimensional Hydrogen Atom Rodney Loudon American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 649 \| Cited 94 times Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract The quantum-mechanical system which consists of a particle in one dimension subjected to a Coulomb attraction (the one-dimensional hydrogen atom) is shown to have a ground state of infinite binding energy, all the excited bound states of the system having a twofold degeneracy. The breakdown of the theorem that a one-dimensional system cannot have degeneracy is examined. The treatment illustrates a number of properties common to the quantum mechanics of one-dimensional systems.

Select this Article		Resolution of the Clock Paradox Geoffrey Builder American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 656 \| Cited 1 time Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract It is shown that the clock paradox of the restricted theory of relativity arose solely out of the elementary mistake of utilizing, in a single calculation, quantities expressed in the measures of two different reference systems.

Select this Article		Structure, Methods, and Objectives of the Required Freshman Calculus-Physics Course at Amherst College A. B. Arons American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 658 \| Cited 1 time Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract A description is given of the Amherst freshman calculus-physics course with specific examples of test questions, term paper assignments, and laboratory instructions. A few quotations are given from student papers, and fairly detailed syllabi of the mathematics and physics work are included.

Select this Article		Focusing Trajectories for Projectiles in an Inverse Square Field Daniel F. Dempsey American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 667 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Liquid Drop Nuclear Model W. K. Bertram, L. N. Hadley, and F. K. Itamoto American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 668 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Newton's Law of Cooling as a Laboratory Introduction to Exponential Decay Functions John W. Dewdney American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 668 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Fields of an Accelerated Point Charge B. C. Carlson American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 669 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Young's Modulus of Black Soda Glass Fibers O. S. Heavens American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 670 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Measurement of the Earth's Field Using Helmholtz Coils Nicholas Hull American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 670 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Physical Laws and Effects C. F. Hix, Jr., Author, R. P. Alley, Author, and Noah Sherman, Reviewer American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 671 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Liquid Helium K. R. Atkins, Author and Henry A. Fairbank, Reviewer American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 672 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		A History of Western Technology Friedrich Klemm, Author and E. C. Watson, Reviewer American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 672 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Lectures on Nuclear Theory L. Landau, Author, Ya. Smorodinsky, Author, and E. J. Konopinski, Reviewer American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 673 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		The Design of Physics Research Laboratories R. Ronald Palmer, Reviewer American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 673 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		AAPT Competition for New and Improved Physics Apparatus W. C. Kelly American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 674 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Proceedings of the American Association of Physics Teachers. Summer Meeting at Dartmouth College, Hanover, New Hampshire, June 25–27, 1959 Leonard O. Olsen American Journal of Physics -- December 1959 -- Volume 27, Issue 9, pp. 678 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable