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Table of Content
20 December 2013 Volume 32 Issue 12
著者文摘
On the rigor of proving quantum operator formula
. 2013, 32(12): 1-1.
Abstract
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733
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(304KB) (
471
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An operator formula is demonstrated rigorously in two ways by constructing two operator functions, The shortcomings of proving operator formula in some references are pointed out ,and the rigor of proving quantum operator formulas is emphasized.
On the rigor of proving quantum operator formula
. 2013, 32(12): 4-4.
Abstract
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742
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PDF
(255KB) (
354
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An operator formula is demonstrated rigorously in two ways by constructing two operator functions, The shortcomings of proving operator formula in some references are pointed out ,and the rigor of proving quantum operator formulas is emphasized.
Derivation of thermodynamic stability conditions of equilibrium for isolated homogeneous system
. 2013, 32(12): 7-7.
Abstract
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1655
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(264KB) (
1099
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Thermodynamic stability conditions of equilibrium play an important role in the classical thermodynamics. This paper starts with the principle of entropy increase and introduces the thermodynamic equilibrium condi- tions of isolated homogeneous system. Based on the second derivative of entropy less than zero and combining with the first law of thermodynamics and Maxwell relations, we educe the stability conditions of equilibrium for isolated homogeneous system.
Calculation of the electric field between parabolic conductor plates
. 2013, 32(12): 10-10.
Abstract
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825
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(159KB) (
478
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According to the equation of the equal potential lines, the distribution of the electric field between two confocal parabolic conductor plates is calculated by using analytical function and Cauchy-Riemann condition, and the equation of the electric field lines is given.
Demonstration and validation device for measuring moment of inertia and angular momentum conservation
. 2013, 32(12): 12-12.
Abstract
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973
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(379KB) (
323
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The objective of such new demonstration and experimental device for measuring moment of inertia and angular momentum conservation is to improve the efficiency and accuracy of measuring moment of inertia. The experimental results show that the device has the advantages of simple measuring method, measuring speed, more accurate results. In addition,it has also a qualitative demonstration and quantitative validation for closed angular momentum conservation system and a number of experimental functions.
Theoretically and experimentally study of Fraunhofer diffraction of the double slits
. 2013, 32(12): 15-15.
Abstract
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1984
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PDF
(595KB) (
989
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This paper has made an exhaustive derivation of Franuhofer diffraction of double slits with different widths and Gaussian beams in terms of the Kirchhoffs theory. The influence of double slits with different widths,the Gaussian beams and the laser spot radius on the intensity distribution of double slits diffraction is analyzed by the experimental and numerical studies. The experimental phenomenon of double slits diffraction is discussed through theoretical analysis and experimental demonstration.
The phenomena of spectrum bend in measuring prism refractive index by a spectrometer
. 2013, 32(12): 21-21.
Abstract
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1163
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PDF
(357KB) (
495
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The feature and causes of spectrum researched by geometrical optics,a formula of offset drawn and compared with computer simulation. It experimental ones. bend in measuring prism refractive index by a spectrometer are from the outgoing light of prism to the incident light of that is is shown that the simulating results are consistent with the
On the liquid bridge formed with dielectrical liquid in a non-uniform electric field
. 2013, 32(12): 24-24.
Abstract
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760
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(1010KB) (
591
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If a high voltage is applied to a fluid（e, g. deionized water）in two beakers,which are in contact, a fluid bridge may be formed. The formation and stability of the bridge are researched. The various bridges formed with different liquids are investigated. With the help of the Bernoulli equation involving the work of electric force, the mass transfer of the liquid through the bridge is analyzed and researched experimentally
The half-wave loss of the travelling wave in strings
. 2013, 32(12): 29-29.
Abstract
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1308
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(255KB) (
391
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When the wave travels to the junction of two media, the sudden change of medium property can exert influence on the fluctuation. This paper takes the example of travelling wave in strings to discuss the relationship of reflected wave and incident wave generally.
Theoretical discussion on several problems about the Bohr resonance experiment
. 2013, 32(12): 31-31.
Abstract
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1084
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(263KB) (
513
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Based on the damped motion of air medium equation, the quality factor of energy dissipation is de- fined, the solution of stable equation is obtained without the forcing underdamped condition. The mechanical energy formula of system stored in the time t is derived, and the relationship between the quality factor and the related parameters is got. According to the maximum amplitude of the system reaching steady amplitude and the system resonance, the half broadband relationship is deduced. Through the establishment of forcing power （P1） and resistance （P2） expression formula, the conclusion two equal size minus opposite, namely, P1 ＋P2 =0, are obtained, with t to （t＋T） for solving the integral upper limit and lower limit of average power, and the result are got that force work is equal to the system to add energy. The discussion of these issues can play guiding role for colleagues and students.
The similarities and differences of fringes of equal inclination and Newton＇s ring
. 2013, 32(12): 34-34.
Abstract
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1008
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PDF
(278KB) (
861
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The formation and the method of mathematical derivation of fringes of equal inclination and Newton＇s ring are discussed. Moreover, the simulations and differences between the equal inclination and Newton＇s ring are compared and analyzed.
The digitalized teaching study on Newton＇s ring experiment
. 2013, 32(12): 37-37.
Abstract
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677
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PDF
(453KB) (
313
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The traditional Newton＇s ring experiment apparatus is adapted, the phenomenon of optical and visual are displayed in front of students, the Newton＇s ring experiment teaching of digital is realized. The system can also be applied to other optical experiments, which is simple and convenient, low costs and worth to popularize.
Matlab in physics
. 2013, 32(12): 39-39.
Abstract
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1308
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(899KB) (
590
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Introducing numerical simulation into college physical education that is favorable to the students＇ analyzing and understanding physical problems. Moreover, it is training the students to study physical problems in a deep-going way. According to the characteristic of the freshmen and sophomore, numerical simulation probing into the MAatlab in physics, could reduce programming intensity and spur students on to physical phenomenon and modeling. Offering the courses, ＂Matlab programming in physics＂ is to realize the expectations. Teaching reform of the course is studied in this paper.
Setting physical experiment teaching system with remarkable practical and innovative capability
. 2013, 32(12): 43-43.
Abstract
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606
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PDF
(342KB) (
362
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Based on the exigent need of national development and the main purpose of high education, the paper is focus on the developing of innovative capability and the particularity of physics experiments, and indicates the methods of realizing the basic teaching demands and the quality-oriented education. Furthermore, the paper pres- ents five basic methods of developing of innovative capability in university physical experiments against to the prob- lems in the physical experiments teaching system, which makes distinct sense and is practical to high education.
Development of university physics for excellent scientist and engineer
. 2013, 32(12): 46-46.
Abstract
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1027
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(430KB) (
592
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In recent years, in order to achieve the goals of strengthening students＇ engineering and innovative a- bility proposed in the excellent engineer and top creative talents education and training programs, the teaching group of university physics in the school of physics, Beijing Institute of Technology is constantly exploring new con- cept, new methods and new ideas of the research-oriented university physics teaching which is closely related with real engineering. A highly qualified faculty has been constructed to fit the research-oriented teaching. The curricu- lum system has been reformed. A series of new textbooks with distinctive features have been published. The mod- ern, network-based, multi-dimensional construction of research-oriented teaching methods and models has been carried out. The cultivation of students＇ scientific way of thinking, sense of innovation and comprehensive applica- tion ability by classroom teaching has been further strengthening. And the students assessment and evaluation sys- tem adapt to research-oriented teaching has been built. A new way of research-oriented university physics teaching reform which is taking holding in foundation, keeping in step with front and facing the reality has been taken.
Research on the investigation result of deepening physics teaching reform
. 2013, 32(12): 49-49.
Abstract
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668
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PDF
(286KB) (
439
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The puzzle about teaching reform in college physics under the background of the engineering education is introduced firstly. In order to solve those problems, the teaching reform in physics must be carried out deep. Furthermore, using the method of the questionnaire to the nationwide physics teachers in colleges, the detailed statistical work is carried out for received questionnaire to make teaching reform more universal. The idea how to deepen teaching reform in physics course is obtained by means of analysis to investigation results. At the same time, the direction of the reform is ascertained.
Construction of university physics teaching cases with military characteristics： understanding and practice
. 2013, 32(12): 52-52.
Abstract
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651
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PDF
(310KB) (
506
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The university physics teaching cases is to deepen the teaching reform in teaching resources. The related concepts of case teaching are briefly discussed, the basic characteristics of university physics teaching case are analyzed, the train of thought to build university physics teaching case with military characteristics is put forward, the development of university physics teaching case and the relevant teaching practice are described.
The practice of integrating construction about arts physics curriculum
. 2013, 32(12): 55-55.
Abstract
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595
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(325KB) (
428
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This paper analyzes the importance of establishing arts physics and the present condition of the arts physics curriculum in our school. Based on the actual situation in the process of our own teaching, several proposals of the integrating construction are brought forward for the arts physics, such as the arrangement of the curriculum hours, the plan of the curriculum, the reform of teaching method and means, the construction of teaching team and network platform.
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