摘要
提出了证明小圆孔具有正、负焦距的一种方法。
It is proved that a small circular aperture has the positive and minus focal distances,and the research experiments for small aperture glasses are introduced concisely.
出处
《大学物理》
1999年第6期25-26,共2页
College Physics
关键词
圆孔衍射
焦距
小孔眼镜
正负焦距
circular aperture diffraction
focal distance
small aperture glasses
