Using the relativistic Lagrangian expression,we develop a method to derive the equation of motion of the torsion balance in a non-inertial reference frame,which is used to analyze the gravitational experiment in measu...Using the relativistic Lagrangian expression,we develop a method to derive the equation of motion of the torsion balance in a non-inertial reference frame,which is used to analyze the gravitational experiment in measuring Newton's constant G with the angular acceleration method.Our calculation shows that the Earth's rotation couples with the vibration,which should be considered in the high-accuracy experiments of determining the gravitational constant G.展开更多
The currently accepted value for the upper limit on the photon rest mass comes from a rough estimate based on the solar wind method.We reconsider this method and present a more detailed analysis of the electromagnetic...The currently accepted value for the upper limit on the photon rest mass comes from a rough estimate based on the solar wind method.We reconsider this method and present a more detailed analysis of the electromagnetic fields in interplanetary space.The simple analytic expressions for the solar wind magnetic field,electric field and current are obtained with a finite photon mass.The upper limit on the photon mass is re-estimated as mγ<0.8×10^(-54) kg,which improves the current bound by up a factor of 2,and further confirms the reliability of the solar wind method.展开更多
The Casimir force between the plates with the oxide Him in(3-pl)-dimensional version is studied by means of the source theory.Theoretical analyses show that the Casimir force between the plates could be affected by th...The Casimir force between the plates with the oxide Him in(3-pl)-dimensional version is studied by means of the source theory.Theoretical analyses show that the Casimir force between the plates could be affected by the oxide Him on the surface of the plate.Numerical simulation shows that the variation due to the oxide Him will reach at the level of about 5%for the typical experimental parameters,which means that the oxide film effect should be considered in the high precision experiment.展开更多
基金Supported by the National Natural Science Foundation of China(11175160)the Fundamental Research Funds for the Central Universities(2010079045)the Natural Science Fund of Hubei Province(2010CDB04102).
文摘Using the relativistic Lagrangian expression,we develop a method to derive the equation of motion of the torsion balance in a non-inertial reference frame,which is used to analyze the gravitational experiment in measuring Newton's constant G with the angular acceleration method.Our calculation shows that the Earth's rotation couples with the vibration,which should be considered in the high-accuracy experiments of determining the gravitational constant G.
基金Partially supported by the National Natural Science Foundation of China(11275057).
文摘The currently accepted value for the upper limit on the photon rest mass comes from a rough estimate based on the solar wind method.We reconsider this method and present a more detailed analysis of the electromagnetic fields in interplanetary space.The simple analytic expressions for the solar wind magnetic field,electric field and current are obtained with a finite photon mass.The upper limit on the photon mass is re-estimated as mγ<0.8×10^(-54) kg,which improves the current bound by up a factor of 2,and further confirms the reliability of the solar wind method.
基金Supported in part by the Plastic Shape Simulate&Mould Technology Laboratory(98-8)the National Natural Science Foundation of China under Grant No.1942500&。
文摘The Casimir force between the plates with the oxide Him in(3-pl)-dimensional version is studied by means of the source theory.Theoretical analyses show that the Casimir force between the plates could be affected by the oxide Him on the surface of the plate.Numerical simulation shows that the variation due to the oxide Him will reach at the level of about 5%for the typical experimental parameters,which means that the oxide film effect should be considered in the high precision experiment.
