Analyzes more than 50 books and 14 periodicals for contributions to the history of physics. Recurring most frequently are topics in optics, ether, relativity, mechanics and atomic or nuclear physics although, historically, the works range from the 5th century B.C. to present times. (Author/CP)

Presents a simple classical method of describing spin resonance in terms of average power absorbed. (SL)

Describes a technique for bypassing complications in finding the energy eigenfunctions and eigenvalues of a charged (spinless) particle in a uniform magnetic field. (SL)

Describes a precise yet simple method for computing eigenvalues and eigenvectors of a symmetric matrix useful in teaching quantum mechanics. (SK)

Describes a demonstration in which a ball is placed in an unstable position on a saddle shape. The ball becomes stable when it is rotated above some threshold angular velocity. The demonstration is a mechanical analog of confining a particle in a "Paul Trap". (DDR)

Presents an alternative approach for deriving the perturbation formulas for the energy in quantum mechanics. The procedure focuses on the solution of the secular equation D(E)=O, and then derives the first-, second-, and third-order formulas by the same method. (GA)

Compares two approaches to strong absorption in elementary quantum mechanics; the black sphere and a model based on the continuum theory of nuclear reactions. Examines the application to proton-antiproton interactions at low momenta and concludes that the second model is the appropriate and simplest to use. (Author/GA)

States and proves some useful identities in normal ordering. The identities can be very useful in ordinary quantum-mechanicaland many-body problems. (Author/GA)

Presents a simple yet effective means for demonstrating crystal optics using a microwave beam on wood targets. Describes a method to quantitatively examine the separation of ordinary and extraordinary waves. (JRH)

Gives an explicit and elementary proof that the radial energy eigenfunctions for the hydrogen atom in quantum mechanics, bound and scattering states included, form a complete set. The proof uses some properties of the confluent hypergeometric functions and the Cauchy residue theorem from analytic function theory. (Author/GA)

Describes apparatus for demonstrating wave motion in a ripple tank, the conservation of momentum on a linear air track, and velocity distribution in an ideal gas simulator. (SL)

Discusses the phenomenon of formation of white dwarfs, neutron stars, and black holes from dying stars for the purpose of providing college teachers with materials usable in the introductory physics course. (CC)

Demonstrates that infinitely many Lagrangians and Hamiltonians can be constructed from a given equation of motion. Points out the lack of an established criterion for making a proper selection. (Author/GA)

Investigates a sequence of inelastic collisions resulting among three spheres, whose centers are on a line, when at the outset the leftmost sphere is propelled to the right and the other two spheres are at rest. Expressions are obtained for velocity, time, and distance variables. (MLH)