Young’ s double. slit interference ( YDSl) is an important content in the courses like Optics ,College Physics , and its basic principle is widely used in engineering technology. In this paper, YDSl experiment was simulated by programming with MA'TLAB, and the simulation results straightforwardly show the effects of theslit spacing, the distance between the slit and the receiving screen and the light wavelength on the YDSlP articularly, we simulated the YDSl experiment with the white light as a light source, based on which weshowed the color spectrum of dispersion induced by the interference , and the mechanism for the change of light intensity and spectral contrast, In addition, we further compared the simulation results of measuring there fractive index of transparent dielectric films when using, separately , monochromatie and white light as light sources , demonstrating the limitation of a monochromatic light source in the experiment, The simulation experiment performed in this work is of great significance not only for deepening students’ understanding on the light interference ,but also for enriching the teaching content of YDSl, and cultivating students’ scientific exploration literacy and improving their ability to analyze and solve problems using information technology.

The Frank-Hertz experiment is important for verifying the quantization of electron energy and is aclassie in recent physics experiments, However, the experimental results are generally limited by the experimental conditions and data processing methods. In this paper, Matlab soltware is used to calculate the first excitation potential of monatomie gas argon by segmented linear interpolation , three times Hermite inte rpolation and three times spline interpolation and ploting the curve of eight sets of measured data, and it is found that the curve fitted by three times spline interpolation is smoother and the consisency of the results is belter. Meanwhile ,the first exeitation potential of the gas argon is obtained by the quantum mechanics-based first nature prineiple caleulation, and compared with the experimental results, it is found that compared with the Perdew-Burke-Erzerhof( PBE ) generalized funetion, the first excitation potential calculated by using theHeyd-Seuseria-Emzerhof( HSE06 ) generalized function has a better agreement with the experimental value ,and the introduction of spin-orbit coupling leads to the cleavage of the energy level but does not change theexeitation potential significantly.

Billiards is a sport full of strategy and skill. During the entire process of a single strke ,the collisionbehween the cue and the white ball, the collision between the white ball and the target ball, as well as theeollision between the white ball and the edge of the table can be approximately regarded as ideal perfectlyelastie collisions. For these three seenarios , ideal physical models for billiards collisions and movements areestablished,Based on physical prineiples such as the momentum theorem, the law of roation, the law ofeonservation of momentum ,and the law of conservation of mechanical energy , this exploration delves into therelationship between the foree applied when the cue strikes the white ball, the angle of collision between thewhite ball and the target ball, and the final orientation of the white ball, and conduct analysis to providetheoretical referenee for improving hiting efieieney.By using the example of billiards collision molion ,studentscan gain a deeper understanding of physical laws and their applications ,and stimulate their interest in learningand innovative thinking.

The processing of data in the University Physies Experiment is particularly crucial.The radius ofcurvature of Newton's rings is measured by interferometry of equal thickness of light as an example : Firstly.different experimental data processing methods were simulated using MATLAB, and the data processing anderror analysis of the three data processing methods of successional difference, least squares and weightedaverage are compared, and the uncertainty of each method is caleulated.lt is found that the least squares method exhibits the optimal fiting results with small errors.Secondly ,the visualization image of Newton's ringsis successfully generated by MA'TLAB, and the experimental results under different wavelengths of light andNewton ring radius are displayed.Comparing the advantages and disadvantages of data processing methods andexperimental visualization can help to intuitively understand and display experimental phenomena and providean effective auxiliary tool for the analysis of experimental results.

According to the quantum theory of light ,the necessary condition for the photoelectric effect is that the frequency of the incident light is greater than the threshold frequency. When this condition is satisfied ,the flux of the escaped electrons depends on the flux of the incident photon. When the frequency of the incident light is greater than the threshold frequency , and the flux of the incident photon is delinitc, the flux of the escaped electrons is also definite, However, not all of these escaped electrons reach the anode to form a current In this paper , the physical factors affecting the current under a certain escaped electrons flux are analyzed. The results show that the main factors affecting the current are the applied forward voltage and the electron escapeangle ( the angle between the initial veloeity of the escaped electron and the axial direction of the phototube)'Then by using the graphing method , we examined the influences of 0, and  in detail, and the conclusions show that ,for an electron with a certain 6,, it can reach the anode and contribute to the current only when l isgreater than a certain critical value. While for a certain U, only those electrons with 0, less than a certaineritical value can reach the anode and contribute to the current.

The half-wave loss of light has an important efleet on the intererence pattern.Taking [loyd mirrorinterferenee and Newton ring equal-thickness interference as examples , the direetion of the electrie veetor of therelleeted light at the dieleetrie separation interface is explored, and the phenomenon of half-wave loss occurringin the interference device is analyzed. Based on the Python language, the fringe patterns of lloyd mirrorinterferenee and Newton ring equal-thiekness interferenee under different conditions are simulated , and theelfeet of the presenee or absenee of half-.wave loss on the interference fringes is demonstrated comparatively ina Newton ring device. The integration of computer programming language into theoretieal and experimentalteaching,and the visualization of theoretical formulas and experimental data can help to improve the teachingelfeet , deepen students’ understanding of the basie principles,and stimulate their innovative thinking.

The measurement of gravitational acceleration by a single pendulum is a basic content in the physicsexperiment of the university ,and it is also a conventional method to measure the aeceleration of gravity , in the experiment ,three measurement tools are usually used to measure the period,such as a smart phone ,a multi-funetion timer and 'Tracker software."'he experimental results show that the accuracy of the three measurementtools is in descending order: 'Tracker software , multi-funetion timer, and smart phone. In the experiment , thesingle pendulum period is often affected by the movement of the conic pendulum and produces errors ,and the analysis of Tracker software shows that the movement of the single pendulum will lead to the small gravitation alacceleration of the measured gravity.

With the advancement of computational power and technological improvements , interactive virtual simulation experiments based on physical principles have become feasible for university physics education. This paper takes the magnetron condition experiment as an example. By solving the equations of motion of the rmalelectrons under the influence of a radial eleetric field and an axial magnetic field, and integrating computer programming techniques , real-time calculation of electron trajectories is achieved. Experimental data collection and Boltzmann fiting functions are utilized to implement numerical simulations of the magnetron conditions .The simulation experiment incorporates differential computation funetion ality, adding a verification experiment where the initial velocities of thermal electrons follow a Maxwell velocity distribution into the teaching content. The virtual simulation experiment developed based on the technologies not only meets the existing experimental objectives but also visually displays electron trajectories, thereby expanding the depth and scope of the magnetron condition experment.

The equivalent cireuit model ( ECM)is an important means to study the complex physical andchemical process of the electrochemical impedance measurement of solution, and it has important application inthe engineering technology research and development of the equipment such as the solution conductivitymeasurement instrument,The potassium chloride solution ( KCl) was selected as the research object , and theimpedanee spectrum of 0.01 mol/l, to 1 mol/L, KCl was measured using electrochemical work station andplatinum black parallel double electrodes, The Lima and Randles ECM were used to fit the measurement resultsrespectively and the accuracy of the two models were compared. Based on the fact that the physical andchemical mechanism of the solution is diflerent at different AC excitation signal frequencies ,the measurementresults are simulated at high and low frequencies respectively, to further improve the simulation accuracy , andthe high-frequeney ECM is raised based on the Lima ECM and Randles ECM. High frequency ECM was used tosimulate the conductivity of KCl solution with different concentrations at high frequeney , and the differences of ohysical and chemical processes in solution caused by different coneentrations were compared and analyzed.

This article explores the influence of factors such as the ratio arm value and bridge arm resistance/alue on the sensitivity of the Wheatstone bridge experiment by constructing a simple Nike function. Themalysis shows that the influenee of the ratio arm value on the sensitivity of the bridge depends on theidjustment method of the ratio arm.By adjusting different bridge arm resistanees to change the ratio arm , thenlluenee of the ratio arm on the sensitivity of the bridge is dilrerent: When the ratio arm value is fixed .thereexist a set of bridge arm resistance values that maximizes the sensitivity of the bridge.