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Table of Content
20 June 2007 Volume 26 Issue 6
著者文摘
Young＇s interference experiment of polarized light
. 2007, 26(6): 1-1.
Abstract
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920
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(314KB) (
586
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The basic analytic method and phenomena of electromagnetic interference is explained through the discussions of Young＇s experiment of polarized light within the framework of fundamental optics based on the superposition of vectorial waves, including the interference of two linearly polarized beams and the case of one linear beam passing through a pair of wave plates of arbitrary thickness. It shows that generally the spatial mod- ulation of polarization will occur at the observation plane with or without intensity modulation. These analyses indicate the important role of vectorial properties of light waves in interference and may uncover some physical effects of interference hidden when only the intensity fringes are concerned.
Electric field line of one dimension electric charge system
. 2007, 26(6): 5-5.
Abstract
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833
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PDF
(394KB) (
857
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The equaion of the electric field excited by charge distributes in one dimension is deduced, and using mathematics software MatLab its electric field lines are drawn. The images are not only scientific but surpass the hand drawing one also.
The collision frequency and reaction velocity coefficient of particle beam in gas system
. 2007, 26(6): 11-11.
Abstract
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782
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(368KB) (
469
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The frequency of collision between particle beam and particles of gas system is investigated. The relation between reaction velocity eoeffcient and characteristic velocity of gas is investigated with the method of statistics.
The spin-waves in zig-zag spin ladders model
. 2007, 26(6): 16-16.
Abstract
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877
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(204KB) (
531
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The spin-waves, sub lattice magnetic moments, internal energy and heat capacity in zig-zag spin ladders model with frustration are studied.
The general approach to solve linear polyatomic molecular vibration utilizing linear quantum transformation theory and stationary state perturbation theory
. 2007, 26(6): 19-19.
Abstract
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863
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(366KB) (
401
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The vibrational model of linear polyatomic molecule is adopted, choosing atomic displacements along and perpendicular to bond axis as the internal coordinates, multidimensional coupling oscillators and outstripping quadratic power terms of the potential function, respectively, as zero order approximation and perturbation. The vibration of linear polyatomic molecule are generally solved utilizing general linear quantum transfor- mation theory and stationary state perturbation theory. Finding the solution of the oscillator＇ s eigenvalue and state for linear polyatomic molecule is changed into the diagonalization of semi-positive and positive definite matrices. Perturbation matrix elements, all of the different levels energy and perturbation corrects of wave function are calculated in the representation of multidimensional non-coupling oscillators. And as a example CO2 molecule is particularly solved.
A new solution to the problem of beetle and rubber band
. 2007, 26(6): 24-24.
Abstract
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786
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PDF
(162KB) (
482
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a new solution to the problem of beetle and rubber band is presented.
Interaction energy and force between two coaxial rings
. 2007, 26(6): 26-26.
Abstract
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835
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(193KB) (
719
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Interaction energy and force between two coaxial rings are obtained. The spatial distribution diagram for force is plotted. Variation of the force with distance and radius of the rings are discussed as weel.
The formation of photonic band gaps in periodic multilayer structure
. 2007, 26(6): 28-28.
Abstract
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867
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PDF
(274KB) (
381
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Interaction energy and force between two coaxial rings are obtained. The spatial distribution diagram for force is plotted. Variation of the force with distance and radius of the rings are discussed as weel.
The comparative analysis between the GA and the method of least squares in data processing
. 2007, 26(6): 32-32.
Abstract
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1097
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(233KB) (
557
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The genetic algorithms is used in getting the formula of glycerin viscosity coefficient＇s variation with temperature. And comparing with the original formula given by the method of least squares, the result shows that the formula definited by the genetic algorithms is more accurate. It proves that the genetic algorithms have a very high value in the nonlinear problems.
On the application of digital camera in the Zeeman effect experiment
. 2007, 26(6): 35-35.
Abstract
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705
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(336KB) (
430
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An experimental method for Zeeman effect is introduced, in which the digital camera and computer are used.
Compression strain impedance properties of FeCuNbSiB amorphous alloy strip
. 2007, 26(6): 38-38.
Abstract
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848
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PDF
(307KB) (
614
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FeCuNbSiB amorphous alloy＇s strips with 25μm thickness and 4. 5mm width single - roller method. The stress impedance effect is investigated by 4294A impedance analyzer. And carries on the heat treatment to eliminate the remaining stress. The result show when the test frequency is lower than 20 MHz, the FeCuNbSiB crystalless strip stress impedance effect is smaller, along with frequency increasing, the erystalless strip stress impedance effect appeared obviously strengthening; the crystalless strip stress impedance effect increase after the heat treatment, also elevates the stress impedance effect increase along with the heat treatment temperature.
Some tricks of demagnetization for the experimental device for Hall effect and hysteresis
. 2007, 26(6): 42-42.
Abstract
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1110
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(164KB) (
890
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Some tricks for demagnetization of samples are introduced for an experimental device type HM- 1, the method is symmetric demagnetization.
The sterilization experimental study of nonthermal atmospheric pressure plasma
. 2007, 26(6): 44-44.
Abstract
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738
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PDF
(233KB) (
408
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Compared with the conventional sterilization, nonthermal atmospheric pressure plasma has many advantages. The experimental devices including power supply, coupled measure circuitry, electrode and vacuum system are introduced briefly. The result of experimental test run are presented.
Modern digitization of physics teaching⑥——On teaching model of interaction potentials
. 2007, 26(6): 47-47.
Abstract
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710
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PDF
(400KB) (
376
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In teaching university physics, potential models of interaction are of crucial importance. However, traditional limitation of digital technology contributed quite few such models to students and students knew little about them. Application of digital technology greatly elevates teaching of potential models and achieves a lot of improvement of teaching quality.
An exploration on a disquisitive and interactive teaching mode
. 2007, 26(6): 51-51.
Abstract
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734
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(418KB) (
813
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In the seven years and eleven turns of teaching practice of the course ＂Introduction to Bilingual Physics＂, we carried out an exploration on a disquisitive and interactive teaching mode. In this paper, we present our original intention and some new ideas about teaching and introduce some teaching methods and applications of the textbook 《Bilingual Physics with Multimedia》 related to this kind of teaching mode. It gained several positive effects for cultivating freshmen students＇ initiative study and creative ability. We also suggest some measures for enhancing students＇ abilities in their fouryear study.
The shape of Brillouin zone of body-centered cubic crystal is not normal dodecahedron
. 2007, 26(6): 55-55.
Abstract
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1433
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PDF
(139KB) (
518
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In the seven years and eleven turns of teaching practice of the course ＂Introduction to Bilingual Physics＂, we carried out an exploration on a disquisitive and interactive teaching mode. In this paper, we present our original intention and some new ideas about teaching and introduce some teaching methods and applications of the textbook——《Bilingual Physics with Multimedia》 related to this kind of teaching mode. It gained several positive effects for cultivating freshmen students＇ initiative study and creative ability. We also suggest some measures for enhancing students＇ abilities in their fouryear study.
Double liquid lens based on electrowetting
. 2007, 26(6): 57-57.
Abstract
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926
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PDF
(441KB) (
810
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Double liquid lens based on electrowetting is a novel design of lenses. It can vary the focal length by changing the external voltage to focus and zoom without lens displacement. The history of this kind of lens and its principle is introduced, and the relationship of focal length and external voltage in two models are analyzed.
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