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Some basic properties of the Kelvin-Helmholtz instability are reviewed, and some papers dealing with various refinements of this phenomenon are discussed.
The effects of the isotropic, anisotropic, and vibrational intermolecular forces on the rotation-vibration energy levels in solid parahydrogen are investigated theoretically. The main part of the shift of the rotation-vibration levels is due to the stretching of the molecules by the isotropic...
A survey of the existing data on the shapes of β -ray spectra is given, mostly from the experimental point of view. The majority of the empirical facts accumulated during the past 12 years is repoduced in tables. The problems of Fierz-type and energy-proportional deviations, time reversal,...
A review of the quantum theory of ionizing collisions is presented, with particular regard to recent theoretical developments. A discussion is given of quantal and classical approximations and their predictions compared with experimental data. Some useful empirical formulas are listed and...
The uneasiness prevailing in thermodynamics is the inevitable result of the absence of clearly understood basic concepts. Since thermodynamics, the doctrine of equilibrium, encompasses parts of all branches of the physical sciences, its basic concepts must be explained in ordinary language, free...
The role of beta- and gamma-ray matrix elements in the determination of wave functions for the s 4 p 10 states of mass 14 is examined. The data considered include the Gamow-Teller (beta) matrix elements of C 14 and O 14 and the M 1 and E 2 matrix elements connecting the lowest four s 4 p 10...
A survey of theoretical and experimental methods now available for calculating, producing, and measuring high-energy coherent bremsstrahlung (HEB) and electron pair production (EPP) is presented. After an introduction in which the historical development of the subject matter is sketched, a...
The principles of quantum mechanics impose certain restrictions on acceptable position operators. The probability density as derived from the position operator should agree with the fourth component of the current vector. The various relativistic wave equations are reexamined from the point of...
The quantum-mechanical study of the motion of a charged spin-½ particle in a uniform magnetic field has a number of features which are of interest to theorists. Not only can the Dirac equations be solved completely and analytical solutions be obtained, but unlike the Coulomb problem, the...
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