Now showing items 21-30 of 733
Dipole Moments of Dimethylsiloxane Oligomers and Poly(dimethylsiloxane)
(The American Institute of Physics, 1971-06-15)
Dielectric constants at 20, 30, 40, and 50°C have been determined for pure liquid dimethylsiloxane oligomers (CH3)3Si–[OSi(CH3)2]xOSi(CH3)3 having chain lengths corresponding to x = 3,5,7,and9x=3,5,7,and9. Mean‐square ...
Response of the neutral particle upper atmosphere to the solar eclipse of 7 March 1970
(Elsevier, 1972-04)
A series of five pitot probes were launched from Wallops Island, Va. (38[deg]N) in conjunction with the solar eclipse, 7 March 1970. Three soundings were programmed to occur at 40, 80 and 100 per cent obscuration of the ...
Spin measurements in hadronic high momentum transfer scattering
(The American Institute of Physics, 1979-05-01)
The results of recent experiments investigating spin effects in hadronic high momentum transfer scattering are reviewed. There is evidence for very large spin dependences at high momentum transfer in measurements involving ...
Comparison of high energy neutron-nucleus total cross sections with theory
(Elsevier, 1976-06-07)
A recent paper by Julius purports to show that previous estimates of the effect of inelastic screening on neutron-nucleus total cross sections are much too large. However, we show that most of this discrepancy is due to ...
Measurement of three-dimensional temperature fields above heated surfaces by holographic interferometry
(Elsevier, 1974-12)
Optical holography can be used to record multi-directional interferometric data, which provides a basis for measuring three-dimensional, asymmetric temperature or density fields in fluids. If continuous optical pathlength ...
Appartus for high‐resolution surface tension measurement
(The American Institute of Physics, 1978-01)
We describe an apparatus for measuring surface tension of insulating liquids by capacitive sensing of capillary rise. Two guarded coaxial capacitors with different gap widths are connected to permit liquid to flow between ...
Hyperfine Structure of Thallium Bromide
(The American Institute of Physics, 1970-08-15)
The hyperfine structure of the J = 2J=2 and J = 3J=3 rotational states of TlBr has been measured with a molecular‐beam electric resonance spectrometer. Hyperfine transition frequencies were measured under conditions ...
Model networks of end‐linked polydimethylsiloxane chains. I. Comparisons between experimental and theoretical values of the elastic modulus and the equilibrium degree of swelling
(The American Institute of Physics, 1977-02-01)
Two samples of hydroxyl‐terminated polydimethylsiloxane having molecular weights the order of 2×104 and 1×103 g mol−1 were separated into a total of six fractions of relatively narrow molecular weight distribution. Portions ...
Collisional effects on the drift-cyclotron instability
(Elsevier, 1976-06)
The drift-cyclotron instability in a weakly collisional plasma is considered including temperature perturbations. Collisions are described by a model Fokker-Planck equations. The growth rate of the instability is obtained ...