摘要
利用数码观测式分光计进行劳埃德镜干涉实验,使用分光计中的游标盘测出有干涉现象时到干涉条纹刚好消失时载物台转过的角度,计算出狭缝光源到反射镜的垂直距离,应用数码相机观察记录干涉条纹图像,再运用GIMP软件测出干涉条纹的间隔,最后计算出光波波长.该实验操作简单,测量方便,适合在大学物理实验教学中推广应用.
A scheme of Lloyd mirror interference experiment based on digital observation spectrometer was proposed.In this paper,the vernier plate in the spectrometer was used to measure the rotation angle of the platform between the interference’s exact occurrence and the fringe’s disappearance,as well the vertical distance from the slit source to the mirror was calculated.And a digital camera was used to observe and record the interference fringe images,afterwards the interval of interference fringes was measured by software such as GIMP,and finally the wavelength was calculated to verify the principle of Lloyd mirror interference experiment.The experimental scheme had the advantages of small measurement error,simple operation and convenient measurement,and was suitable for popularization and application in college physics experiment teaching.
作者
童利凭
王凤鹏
张玉强
黄赣
曾泽楷
刘聪
TONG Li-ping;WANG Feng-peng;ZHANG Yu-qiang;HUANG Gan;ZENG Ze-kai;LIU Cong(Physics and Electronic Information,Gannan Normal University,Ganzhou 341000,China)
出处
《物理实验》
2022年第7期29-33,共5页
Physics Experimentation
基金
国家自然科学基金项目(No.61965002)
江西省高等学校教学改革研究课题(No.JXJG-19-14-18)
赣南师范大学大学生创新训练项目(No.S202010418027,No.CX200009)。
关键词
劳埃德镜干涉
分光计
数码相机
Lloyd mirror interference
spectrometer
digital camera
