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Volume 37

Issue 12 | Dec 1969 | pp. 1193-1296

Issue 11 | Nov 1969 | pp. 1091-1192

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Select this Article		Optical Resource Letter on Colorimetry Günter Wyszecki American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1201 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract These Optical Resource Letters are patterned after the materials that have been developed by the AAPT Committee on Resource Letters and previously published in the American Journal of Physics. Since they contain information of direct interest to most teachers of physics, we are pleased to have the permission of the Journal of the Optical Society of America to reprint them in AJP. The purpose is to provide, in an important field of optics, briefly annotated references which should be of value to teachers, researchers, engineers, and technicians interested in the subject area. No claim is made for completeness or exhaustiveness of coverage; rather, it is hoped that the references quoted will be helpful in themselves, and will be representative, or at least suggestive, of the broad literature on this subject. The letter E following an item number indicates that the reference is on a more-or-less elementary level; the letter A indicates an advanced level. The present Optical Resource Letter, OC-1, was prepared under the direction of the OSA Ad Hoc Committee on Resource Letters: K. M. Baird, H. E. Breed, M. A. Jeppesen, J. M. Stone, and S. S. Ballard (Chairman). Additional copies are available from the Executive Office of the Optical Society of America, 2100 Pennsylvania Avenue, N. W., Washington, D. C. 20037. Request Optical Resource Letter OC-1, and please enclose a stamped, return-addressed envelope.

Select this Article		Some More Simple Laser Experiments for the Undergraduate Laboratory F. Y. Yap American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1204 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract Certain elementary optics experiments can be performed with considerably greater ease using a laser instead of conventional light sources. This paper describes three such experiments which illustrate the Fresnel-Arago law, elliptical polarization, double refraction and polarization in calcite, and interference by a Fresnel biprism. Because of the high intensity of the laser beam, these experiments lend themselves very well to demonstrations in front of large groups.

Select this Article		A Quantitative Transmission Line Experiment D. C. Johnston and B. G. Silbernagel American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1207 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract Modification of a commercially available strip-type transmission line is described, which makes possible reproducible measurements of standing waves on the line. The experimental data yield values for the characteristic impedance, phase velocity and line wavelength of radiation in the transmission line, and the dielectric constant of material in the line. Interpretation at several levels of difficulty is discussed and quantitative agreement between experiment and theory is obtained.

Select this Article		On the Interpretation of Measurement within the Quantum Theory Leon N. Cooper and Deborah Van Vechten American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1212 \| Cited 2 times Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract An interpretation of the process of measurement is proposed which can be placed wholly within the quantum theory. The entire system including the apparatus and even the mind of the observer can be considered to develop according to the Schrödinger equation. No separation, in principle, of the observer and the observed is necessary; nor is it necessary to introduce either the type I process of von Neumann or wave function reduction.

Select this Article		Measurement and Interference L. S. Schulman American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1220 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract We use the density matrix formalism to discuss the often encountered question: When do final states due to various initial states add coherently (interfere)?

SECTION LISTING

BROWSE VOLUMES

Dec 1969

Volume 37, Issue 12, pp. 1193-1296

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Select this Article		The Robert A. Millikan Lecture Award 1969 American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1193 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Content and Process in Physics Teaching John M. Fowler American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1194 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Why is Space Three-Dimensional? Based on W. Büchel: “Warum hat der Raum drei Dimensionen?,” Physikalische Blätter 19, 12, pp. 547–549 (December 1963) Ira. M. Freeman American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1222 \| Cited 1 time Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Classification of Electromagnetic and Gravitational Fields Garry Ludwig American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1225 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract The connection between the three main methods of obtaining the Petrov classification is examined. Spinor techniques are used extensively. A five-dimensional complex linear space is introduced whose elements are Weyl tensors. It is found that not only Weyl tensors of type N and type III, but also some Weyl tensors of type I are null vectors in this space. In analogy with the electromagnetic case we would expect these null vectors to correspond to “pure” gravitational radiation.

Select this Article		Fermion Operator Ordering and the Quantum c-Number Correspondence C. L. Mehta and A. K. Jaiswal American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1239 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract The linearly ordered and the exponentially ordered forms of an arbitrary spin ½-Fermion operator are defined and evaluated. As an application an expression for exp (α) exp (β^†) is evaluated which resembles the usual Baker-Hausdorff identity. It is shown that the trace of the product of two Fermion operators can be expressed as a three-dimensional integral over c-number functions. Further the quantum equations of motion are also expressible as equations involving c-number functions.

Select this Article		Equivalence of the δ′ and the Hard Core Potentials R. E. Schenter, H. S. Zwibel, and R. L. Cassola American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1242 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract The introduction of the hard core potential into the two-body problem forces the system wave function to vanish, if the interacting particles approach each other more closely than the hard core radius. In this paper it is shown that this “hard core effect” can also be obtained in the two-body problem by replacing the hard core potential with a δ′ interaction of suitable strength.

Select this Article		Infinite Square-Well Potential with a Moving Wall S. W. Doescher and M. H. Rice American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1246 \| Cited 7 times Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract The problem of a particle in a one-dimensional infinite square-well potential with one wall moving at constant velocity is treated by means of a complete set of functions which are exact solutions of the time-dependent Schrödinger equation. Comparison is made with a first-order perturbation treatment, and numerical results are presented for a particle initially in the ground state.

Select this Article		The Reflection and Transmission of Electromagnetic Waves by a Moving Dielectric Slab. I. Solution in the Moving Frame William J. Noble and Carl K. Ross American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1249 \| Cited 1 time Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract The Darwin scattering method is used to calculate the amplitudes, frequencies and propagation directions of the free space electromagnetic waves reflected and transmitted by a plane-parallel, non-dissipative, isotropic, homogeneous, dielectric slab. The laws of reflection and refraction and the conservation of energy flux follow naturally. Explicit formulas are given for perpendicular polarization but the method is equally applicable to polarization parallel to the plane of incidence. The results of Part I for the reference frame of the moving slab are in a form to be transformed in Part II to the reference frame of a “fixed” observer.

Select this Article		A Proposed Electromagnetic Momentum-Energy 4-Vector for Charged Bodies J. W. Butler American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1258 Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract The conventional electromagnetic momentum- and energy-density expressions (E × H∕c) and [½(E²+H²)], respectively (Heaviside-Lorentz units in free space), are known not to lead to a momentum-energy 4-vector for the fields of charged bodies. Yet the rest of classical electrodynamics is a covariant theory. This is a most remarkable anomaly. The reason for this anomaly is shown herein to lie in the procedure used to derive Poynting's theorem, which is shown not to be covariant in the presence of sources. A 4-vector is derived to represent the 4-momentum dG_μ contained within a volume element dV of the electromagnetic field of a charged body with a 4-velocity u_μ ≡ (γv, iγc): , where γ ≡ (1 − v²∕c²)^−1∕2. This proposed 4-vector is shown to remove several paradoxes associated with the predictions of the conventional momentum and energy density expressions. And the proposed 4-vector is also shown to be in agreement with the results of several experiments.

Select this Article		Heat Capacity of an Ideal Free-Electron Gas: A Rigorous Derivation Robert Weinstock American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1273 \| Cited 1 time Online Publication Date: Jul 2005 Full Text: \| Download PDF
	+ -	Show Abstract It is shown that a standard derivation found in the literature for the heat capacity of an ideal free-electron gas is vitiated by the use of divergent series. A plausible argument is offered to indicate that these series are actually asymptotic expansions that provide good approximations through their first few terms—a provable fact acknowledged by a few writers, but the proof of which has nowhere been seen in print by the present author. The invalid standard procedure is modified through replacement of an infinite series by its first two terms plus a remainder whose bounds are easily estimated as being negligible to the accuracy required; a rigorous derivation of the well-known temperature dependence of the electronic heat capacity of a metal results.

Select this Article		Mechanical Analogy of Hybrid Resonances in a Plasma M. E. Oakes and Richard Freeman American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1280 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		On Tachyon Lorentz Transformation K. H. Mariwalla American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1281 \| Cited 1 time Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Some Operational Characteristics of the Search Rotational Dynamics Apparatus Willard C. Sperry American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1282 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Effect of Gravitation on the Lorentz Transformation L. Karlov American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1283 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		The Definition of a Canonical Transformation Eric Drake American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1284 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Erratum: “Force, Momentum Change, and Motion” [Amer. J. Phys. 37, 82 (1969)] M. Tiersten American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1285 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Erratum: “A Magnetic Field Diffusion Problem” [Amer. J. Phys. 37, 323 (1969)] L. T. Klauder, Jr. American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1285 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Letter re: “The Postulational Approach” F. R. Tangherlini American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1286 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Letter re: “Bernoulli Effect and Kinetic Theory” F. H. Barnes and T. Robertson American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1286 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Reply to Letter of Dr. Barnes and Dr. Robertson Francisco Glover, S. J. American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1287 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Comments on “Agreement between Classical and Quantum Mechanical Solutions for a Linear Potential inside a One-Dimensional Infinite Potential Well” Noble M. Johnson and John N. Churchill American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1287 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Lectures in Theoretical High Energy Physics H. H. Aly, Editor and Peter A. Carruthers, Reviewer American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1288 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		William Whewell's Theory of Scientific Method Robert E. Butts, Editor and Lancelot Law Whyte, Reviewer American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1289 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Mass Motions in Solar Flares and Related Phenomena (Nobel Symposium 9) Y. Öhman, Editor and Robert F. Howard, Reviewer American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1289 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Particles and Fields David Lurié, Author and R. H. Good, Jr., Reviewer American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1290 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Structure of Complex Nuclei N. N. Bogolyubov, Editor and Raymond A. Sorensen, Reviewer American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1290 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Heavily Doped Semiconductors Viktor I. Fistul, Author and J. S. Blakemore, Reviewer American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1291 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Introduction to the Theory of Kinetic Equations Richard Liboff, Author and William Nichols, Reviewer American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1292 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Mechanics in Sixteenth-Century Italy: Selections from Tartaglia, Benedetti, Guido Ubaldo, and Galileo Stillman Drake, Author, I. E. Drabkin, Author, and Alfred Romer, Reviewer American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1293 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable

Select this Article		Minnesota Section Richard E. Pontinen American Journal of Physics -- December 1969 -- Volume 37, Issue 12, pp. 1295 Online Publication Date: Jul 2005 Full Text: \| Download PDF
		Abstract Unavailable