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The time delay experiment proposed by I.I. Shapiro in 1964 and conducted in the seventies was the most precise experiment
of general relativity until that time. Further experimentation has improved the accuracy level of both the time delay and
the light deflection experiments. A simulation model is proposed that involves only a simple mass and time transformation
factor involving velocity of light. The light deflection and the time delay experiments are numerically simulated using this
model that does not use the general relativistic equations. The computed values presented in this paper compare well with
recent levels of accuracy of their respective experimental results. 相似文献
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Cheves Walling 《Tetrahedron》1985,41(19):3887-3900
Properties of radical chain reactions are reviewed including propagating steps, lifetimes of chains, and choices of initiators. Structure and reactivity relations in chain-propagation steps and their effects on regio- and stereochemistry are discussed. The utility of redox chains involving transition metal ions is considered along with the importance of radical ions as reaction intermediates. 相似文献
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Evans Curry Shelby Hildebrand Mark Kunkei Ann Pittman Derald Walling 《International Journal of Mathematical Education in Science & Technology》2013,44(6):997-1001
Completion and performance data from 92 high ability seventh and eighth grade students in an eight‐week summer programme conducted in 1989 and sponsored by the GTE Service Corporation are examined. 相似文献
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J.I. McOmber D.F. Shriver M.A. Ratner J.R. Ferraro P.LaBonville Walling 《Journal of Physics and Chemistry of Solids》1982,43(9):903-909
High pressure Raman, electrical conductivity, and optical microscopic studies on the ternary fast ion conductor Cu2HgI4 were undertaken to delineate the pressure-temperature phase diagram. In addition, comparison of the pressure dependence of Raman shifts in Cu2HgI4 and Tl2ZnI4 was used to assist in making vibrational assignments whenever possible. 相似文献
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Predictions of the “redox” and “complex” schemes for the Fe3+ catalyzed decomposition of H2O2 have been compared with published and new experimental data by numerical integratior of the appropriate complete sets of differential equations. Apparent discrepancies for the redox scheme at high Fe3+/H2O2 ratios are shown to disappear in the complete treatment, and inconsistencies of the complex scheme with both kinetic data and spectroscopic measurements are pointed out. 相似文献
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P. Bakule P.E.G. Baird M.G. Boshier S.L. Cornish D.F. Heller K. Jungmann I.C. Lane V. Meyer P.H.G. Sandars W.T. Toner M. Towrie J.C. Walling 《Applied physics. B, Lasers and optics》2000,71(1):11-17
A Q-switched alexandrite laser suitable for high-resolution spectroscopy is described which produces pulses of 35 mJ energy in a 10 MHz bandwidth, with a high-purity TEM00 mode. The laser can be synchronised to external event to within 100 ns. The output pulse length is 120 ns and the repetition rate 25 Hz. The laser is injection-seeded by a Ti:sapphire laser operating around 730 nm. To preserve single-mode seeding under external triggering conditions, and to obtain small time-jitter, active cavity length control was used. In order to achieve the 10 MHz output bandwidth, intra-cavity electro-optic modulators were used to compensate for the frequency chirp. The refractive index of alexandrite was found to vary linearly with inversion density with a constant of proportionality equal to 1.6᎒-24 cm3. In pulsed operation at 730 nm, the index change due to this effect is only partially compensated by changes due to ground state phonon relaxation. 相似文献