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Table of Content
20 November 2006 Volume 25 Issue 11
第一段
On wisdom in founding the quantum mechanics——The 80～81 anniversary of the birth of matrix- and wave-mechanics
. 2006, 25(11): 1-1.
Abstract
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858
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The tortuous path getting to the founding of quantum mechanics in 1925-1926 is reviewed, stressing on the historical heritage from the classical analytical mechanics and the physical ideas full of genius expressed on the way.
著者文摘
Brief introduction to spintronics and its development of study
. 2006, 25(11): 12-12.
Abstract
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1500
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2357
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Spintronics refers to the study of the role played by electron spin in solid state physics. It is a new emerging field of basic and applied research in physics and engineering where neglected magnetic degree of freedom of an electron, which concerns spin polarization, spin relaxation, and corresponding applications of the electrons. Spintronics device by either adding the spin degree of freedom to conventional charge-based electronic devices or using the spin alone has the potential advantages of increased data processing speed and integration densities compared with the conventional semiconductor devices, nonvolatility, and decreased electric power consumption. In this paper, spintronics in combination with spin-valve sandwich, magnetic tunneling junction, and semiconductor spin electronics are briefly introduced; furthermore, its current development and applications are reviewed.
Annotations on solving Bloch equation
. 2006, 25(11): 18-18.
Abstract
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1905
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(417KB) (
1973
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Bloch equation is one of the most important equation for understanding Nuclear Magnetic Resonance （NMR） based on classical mechanics. It is necessary for students to catch it as the fundamentals of NMR. Annotations on the form of Bloch equation and solving Bloch equation by stages are made, in order to supplement the lack of the details knowledge in the related textbooks and help students in doing NMR experiment.
A solution of a nonlinear simple pendulum using Jacobi elliptic function
. 2006, 25(11): 23-23.
Abstract
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928
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(310KB) (
917
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Some solutions of the motion of a nonlinear simple pendulum are obtained using Jacobi elliptic function under certain conditions by the help of numerical analysis and phase pattern drawed by Matlab.
The improvement on the barometric formula in isothermal process of the gas
. 2006, 25(11): 27-27.
Abstract
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1357
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(236KB) (
824
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Replacing the equation of the quasi-static isothermal process by the quasi-static polytropic process of the ideal gas, the barometric formula of polytropic process is deduced, which is better improvement on the barometric formula of isothermal process. The altitude dependences of the barometric pressure are given for the various five cases in which value of the polytropic index n is taken as 1.0, 1.1, 1.2, 1.3, 1.4, respectively. The improvement on the barometric formula is also discussed due to the gravitational acceleration is changed as the altitude is changed.
Electric charge density on the surface of the conductors of various shapes
. 2006, 25(11): 30-30.
Abstract
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1527
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(215KB) (
2526
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The surface charge density of the infinite conductor and wedge-shaped conductor as well as the gibbous surface of the half-columniform conductor is calculated in detail. It is found that the surface charge density of the same curvature radius conductors might be different in static balance state.
The self-inductance for a tightly wound rectangular solenoid of finite length
. 2006, 25(11): 33-33.
Abstract
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1250
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(228KB) (
614
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A general formula for computing the self-inductance is given by means of magnetic energy. The exact expression is obtained by integration method for a tightly wound rectangular solenoid of finite length, the result is plotted and discussed.
The electric potential of a line charge inside a thin cylindrical conductor
. 2006, 25(11): 35-35.
Abstract
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811
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1034
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The electric potential of a line charge inside a thin cylindrical conductor is calculated by conformal mapping and mirror image method.
Analyse for the Compton scattering
. 2006, 25(11): 38-38.
Abstract
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1165
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(146KB) (
466
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The recoil angle of electron in Compton scattering is incorrect in some text books, and the right sketching of Compton scattering is presented.
The equations of motion of forced damped vibrations in Pohl resonator
. 2006, 25(11): 40-40.
Abstract
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781
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(162KB) (
1061
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A corrected equations of motion of forced damped vibrations in Pohl resonator is discussed.
The measurement of bending loss of single-model quartz fiber——bending loss properties of fiber of the designing experiment
. 2006, 25(11): 41-41.
Abstract
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849
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(329KB) (
1315
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The theory, method and procedure for measurement of the bending loss of single-model quartz fiber by using fiber Bragg grating sensor are introduced. It＇s a designing experiment on optical signal loss due to the bending in the fiber, and can not only enrich the experimental teaching contents, but also enlarge student＇s vision, improve students＇ innovative abilities.
Experimental observation of self-mixing interference in laser diode and micro vibration
. 2006, 25(11): 44-44.
Abstract
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794
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PDF
(469KB) (
725
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The experimental observation of self-mixing interference in laser diode and micro vibration with virtual instruments by LabView software is introduced. The experiment could be a compositive and designing experiment for underclassman.
A new method of determining the Plank＇s constant in use of magnetic susceptibility
. 2006, 25(11): 49-49.
Abstract
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793
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(254KB) (
535
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A new method of the determining Planck＇s constant in use of measuring magnetic susceptibility is developed. It is applied in modern physical experiment. This method is simple and easy.
The strange phenomenon in granular material
. 2006, 25(11): 52-52.
Abstract
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960
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(374KB) (
576
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Some basic characters, laws, outstanding issues, studying significations, and so on in granular material are further understood through analyzing any strange phenomenon different from gas, liquid and solid in granular material and combining some cases of life and production.
Relying on the state key disciplines and being mutually benefited from teaching and scientific research to cultivate the qualified personnel with innovative quality——Reports on the construction of the state base cultivating the talent of physics in Department of Physics, Nanjing University
. 2006, 25(11): 56-56.
Abstract
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1087
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839
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This paper is devoted to give a presentation on carrying out the project to construct the state base cultivating the talent of physics, in Department of Physics of Nanjing University, enhancing input in education, optimizing the teaching staff, reforming education programs and actualizing SRTP to cultivate the talented people with innovative quality.
Just Accepted
