计算机控制在物理演示实验教学中的应用示例

在物理演示实验教学中充分发挥计算机控制的作用,可实时地记录实验曲线,分析实验数据,并与理论结果相比较.通过计算机控制的演示与实习实验能激发学生学习物理的兴趣,提高教学质量.     

合理应用物理演示实验及多种媒体教学手段,提高普通物理教学质量,促进演示实验教学的发展

本文通过对目前物理演示实验及多种媒体教学手段在物理教学中应用情况的分析,探讨如何合理地应用物理演示实验及多种媒体教学手段提高物理教学质量,进而促进演示实验教学的发展。     

楞次定律实验验证--电磁炮

本文给出了一种验证楞次定律实验现象的良好方法,可以明显观察到线圈中突然通以电流时产生的电磁冲击力.     

适应近代物理实验课堂要求的高压实验装置的改进

将高压科学实验技术引入到近代物理实验课堂,采用刚玉代替金刚石作为压贴,并用黄铜或磷铜作为垫片,改进后的DAC压机成本低,可应用于学生实验.     

High-pressure effect on inverse spinel LiCuVO4:X-ray diffraction and Raman scattering

The effect of external quasi-hydrostatic pressure on the inverse spinel structure of LiCuVO 4 was studied in this paper. High-pressure synchrotron X-ray diffraction and Raman spectroscopy measurements were carried out at room temperature up to 35.7 and 40.3 GPa, respectively. At a pressure of about 20 GPa, both Raman spectra and X-ray diffraction results indicate that LiCuVO4 was transformed into a monoclinic phase, which remained stable up to at least 35.7 GPa. Upon release of pressure, the high-pressure phase returned to the initial phase. The pressure dependence of the volume of low pressure orthorhombic phase and high-pressure monoclinic phase were described by a second-order Birch-Murnaghan equation of state, which yielded bulk modulus values of B 0 = 197(5) and 232(8) GPa, respectively. The results support the empirical suggestion that the oxide spinels have similar bulk modulus around 200 GPa.