摘要
研究了物体从-∞移动到+∞的过程中,各区间相应的像距变化规律,设计了实物成虚像和虚物成实像的实验光路,分别用3种对应的光路确定了各种条件下像的准确位置,用逐点描绘的方法绘制了薄凸透镜的物像关系曲线.从曲线图上可求出薄凸透镜的焦距,总结出物体在空间的变化规律及像的性质.
The laws of the changes of the image distance corresponding to different object position from -∞ to ＋∞ are studied. The optical paths for projecting real object into virtual image and virtual object into real image are designed. The exact image positions corresponding to three optical paths are determined, and the object-image relation for thin convex lens is obtained by point-by-point drawing process. The focus length of thin convex lens is obtained using the object-image relation curves.
出处
《物理实验》
北大核心
2009年第4期44-46,共3页
Physics Experimentation
基金
东北师范大学教育教学改革研究项目(No.2007ZLJG35)
关键词
薄凸透镜
焦距
成像
光路
thin convex lens
focus
imaging
optical path
