Now showing items 1-10 of 20
Energy Transfer in Isotropic Turbulence
(The American Institute of Physics, 1963-08)
Energy transfer from large to small eddies at three stations in turbulence behind a square mesh is determined by measuring the rates of change and viscous dissipation of the spectrum and the results are compared with a ...
Determination of Barrier Heights from Low‐Temperature Heat‐Capacity Data
(The American Institute of Physics, 1963-09-01)
A method is presented by which barrier heights, in potential functions hindering the internal rotation of methyl groups, or spectroscopically inactive vibrational frequencies, can be obtained solely from thermal data for ...
Velocity of a Fluid Mass Imbedded in Another Fluid Flowing in a Porous Medium
(The American Institute of Physics, 1963-10)
The velocity of a fluid mass imbedded in another fluid, which is of a different viscosity and a different specific weight and flowing in a porous medium under a prevailing uniform pressure gradient, is investigated. The ...
Stability of Liquid Flow down an Inclined Plane
(The American Institute of Physics, 1963-03)
The stability of a liquid layer flowing down an inclined plane is investigated. A new perturbation method is used to furnish information regarding stability of surface waves for three cases: the case of small wavenumbers, ...
Comparison and Appraisal of Approximation Formulas for Total Elastic Molecular Scattering Cross Sections
(The American Institute of Physics, 1963-05-15)
The Massey—Mohr (MM), Schiff (S), and Landau—Lifshitz (LL) approximations for the total elastic cross section (Q) are intercompared. All can be shown to follow from the same assumption, (i.e., the classical small‐angle ...
Electronic Bases of Molecular Vibrations. I. General Theory for Diatomic Molecules
(The American Institute of Physics, 1963-12-01)
The force constant of a diatomic molecule in a given electronic state is the second derivative with respect to the internuclear distance R of the molecular electronic energy, evaluated at the equilibrium distance Re. In ...
The Ca40(d, [alpha])K38 reaction and the nuclear structure of K38
(Elsevier, 1963)
Natural Ca-targets were bombarbarded with 7.7 MeV deutereons. Magnetic analysis was used to obtain [alpha]-particle spectra at angles of 50[deg], 70[deg] and 90[deg]. About 35 levels in K38 were found up to an excitation ...
Instability of a Current‐Carrying Fluid Jet Issuing from a Nozzle
(The American Institute of Physics, 1963-09)
The velocity across a jet becomes nonuniform due to contraction or expansion of fluid in the presence of electric current within the nozzle from which it issues. The results obtained elsewhere on the instability of a jet ...
Effect of Electromagnetic Propagation on the Magnetostatic Modes
(The American Institute of Physics, 1963-09)
The second‐order effect of electromagnetic propagation on the essentially static‐field distribution of the magnetostatic modes of a ferromagnetic sample is obtained by an iteration‐type technique. The magnetostatic potential ...