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Table of Content
20 July 2012 Volume 31 Issue 7
著者文摘
The dual relation between Aharonov-Casher and He- McKellar- Wilkens topological phases
. 2012, 31(7): 1-1.
Abstract
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773
)
PDF
(365KB) (
741
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The dual symmetry and transformations in classical electromagnetic theory are reviewed. Then the dual relation between the Aharonov-Casher and He-McKellar-Wilkens topological phases related to the electromagnetic interaction is discussed. Finally, we provide the general Lagrangian for the Aharonov-Casher and He- McKellar-Wilkens topological phases and construct a model independent dual relation between the Aharonov-Casher and He-McKellar-Wilkens topological phases by assuming that the electromagnetic interaction with magnetic monopole violates parity symmetry hut consistent with the relativity.
Solving one-dimensional scattering problem by using the transfer matrix method
. 2012, 31(7): 5-5.
Abstract
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1212
)
PDF
(389KB) (
1326
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Using the transfer matrix method, we solve the transmission and reflection coefficients of a particle through an arbitrary barrier, and give the probability density distribution curve of the particle.
Edge-effect in capacitance of non-parallel plate capacitor
. 2012, 31(7): 9-9.
Abstract
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1899
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PDF
(346KB) (
2373
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A non-parallel＇plate capacitor is transformed to a parallel-plate capacitor by the conformal mapping method, and the capacitance of capacitor involving edge-effects is calculated by the use of Schwarz-Christoffel transformation. The influence on capacitance of inclined angle and edge-effect is discussed.
Analysis of the present situation of Chinese college physics exercises
. 2012, 31(7): 13-13.
Abstract
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743
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PDF
(397KB) (
1059
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Aiming at classifying and analyzing exercises in four sets of physics books used by the students majoring in science and engineering in colleges and universities of China, we point out advantages and disadvantages of these exercises based on the requirement of the Ministry of Education.
Analysis of the present situation of Chinese college physics exercises
. 2012, 31(7): 16-16.
Abstract
(
957
)
PDF
(251KB) (
690
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Aiming at classifying and analyzing exercises in four sets of physics books used by the students majoring in science and engineering in colleges and universities of China, we point out advantages and disadvantages of these exercises based on the requirement of the Ministry of Education.
The collision of a pellet and a honogeneous fixed-spindle pole（sequel）
. 2012, 31(7): 19-19.
Abstract
(
915
)
PDF
(255KB) (
1778
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Based on the characteristics of deformation and energy transformation in the process of collision, we provide a solution to a general inelastic collision of a pellet and a fixed-spindle pole in terms of elasticity degree.
The collision of a pellet and a honogeneous fixed-spindle pole（sequel）
. 2012, 31(7): 21-21.
Abstract
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923
)
PDF
(256KB) (
923
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Based on the characteristics of deformation and energy transformation in the process of collision, we provide a solution to a general inelastic collision of a pellet and a fixed-spindle pole in terms of elasticity degree.
Mechanical analysis of ＂motorcycle stunt riding＂
. 2012, 31(7): 24-24.
Abstract
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1073
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(163KB) (
704
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By using the basic knowledge of mechanical equilibrium, we provide an explanation and theoretical analysis on the reason why stunt motorcycle （automobiles） can drive on the inner surface of a cylindrical wall.
Two general formulas of border equivalent resistance and capacitor of enhanced polygon network
. 2012, 31(7): 26-26.
Abstract
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962
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PDF
(415KB) (
742
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Some results has already been obtained in the study of equivalent resistance of regularly connected polygon resistance network, but the border equivalent resistance still lacks research on parameter value （resistance or capacitor）. By analyzing the network and constructing a model based on differential equation, we get a laconic general formula of equivalent resistance or capacitor of enhanced polygon network. The polygon concept arriving two sides structure of the non-Euclid space is also expanded, and the results are compared with connected argument. The conclusion is also suit to some regularly connected polygon impedance networks.
Solving one-dimensional scattering problem by using the transfer matrix method
. 2012, 31(7): 31-31.
Abstract
(
767
)
PDF
(257KB) (
621
)
Related Articles
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Metrics
Using the transfer matrix method, we solve the transmission and reflection coefficients of a particle through an arbitrary barrier, and give the probability density distribution curve of the particle.
Application of the open source video analysis and modeling software tracker to the projectile motion
. 2012, 31(7): 34-34.
Abstract
(
1044
)
PDF
(976KB) (
1338
)
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The computer aided scientific experiment is an important way to carry out the scientific research. Taking the analysis of the projectile motion video as an example, this paper describes the general procedure to analysis the recorded experiment video. We expect that this free open-source software can he used in both physics teaching and researching for high school and college students and teachers. It will be helpful by using this software to stir up the student＇s interests in explore the physics principles which hidden behind the physics experiments, and to extend the tool to analysis the experiment.
Overall improvement of Young＇ s modulus measuring experiment
. 2012, 31(7): 37-37.
Abstract
(
2304
)
PDF
(283KB) (
719
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The stretch method for measuring Young＇ s elasticity modulus of wire is a basic experiment of mechanics, but the present instrument is difficult to meet the teaching demand. We present an innovative method and develop the new instrument by using minilaser instead of telescope, which can greatly improve the accuracy of determination measurement and make operation become easy. It is shown that the instrument has favorable teaching effect.
Electrically operated centripetal force quantitative analysis demonstration meter
. 2012, 31(7): 40-40.
Abstract
(
948
)
PDF
(308KB) (
1114
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For the lack of experiment of the present ＂ centripetal force demonstrator＂, we improve the quantitative analysis show of the centripetal force of the electric instrument. The new instrument retains the centripetal force demonstrator part of the electric components, measures and improves the turning radius of the centripetal force measuring device. By changing the motor speed, the radius of circular motion, balls and other quality parameters of the device can be studied qualitatively and quantitatively.
Some thoughts triggered by seven Japanese Nobel Prize winners in physics
. 2012, 31(7): 43-43.
Abstract
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941
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PDF
(443KB) (
1178
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The seven Japanese winners of the Nobel prize in physics are introduced and analyzed systemically This can provide some enlightenments to us.
How far away is fusion power？
. 2012, 31(7): 47-47.
Abstract
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832
)
PDF
(656KB) (
435
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The fusion power is one of the uhimate dreams of human kind. In near sixty years of fusion research, many great leap-forwards have been achieved, but severe challenges also linger. This article introduces the concept of fusion power, mainstream fusion researches, a brief history of fusion research, major challenges, recent progresses, perspective of fusion power in this century, and the revolution of human society once it comes true.
White-light equal-inclination interference on Michelson interferometer：the experimentation, fringe features and related mechanism
. 2012, 31(7): 52-52.
Abstract
(
2631
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PDF
(453KB) (
1398
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The white-light equal-inclination interference is implemented by inserting a glass plate before a mirror of the Michelson interferometer, and features in appearing range, contrast and color of the interference fringes are observed. Based on dispersion, a concise digital computation expression and an approximate analytical expression are established to determine the contrast of the fringes, and the fringe features are completely explained.
Application of the open source video analysis and modeling software tracker to the projectile motion
. 2012, 31(7): 57-57.
Abstract
(
942
)
PDF
(343KB) (
401
)
Related Articles
|
Metrics
The computer aided scientific experiment is an important way to carry out the scientific research. Taking the analysis of the projectile motion video as an example, this paper describes the general procedure to analysis the recorded experiment video. We expect that this free open-source software can he used in both physics teaching and researching for high school and college students and teachers. It will be helpful by using this software to stir up the student＇s interests in explore the physics principles which hidden behind the physics experiments, and to extend the tool to analysis the experiment.
Just Accepted
