“真问题”对物理大概念教学的启示——以几何光学和波动光学下的“小孔成像”为例  

The Enlightenment of“True Problems”on the Teaching of Big Concepts of Physics——Taking“Small Hole Imaging”under Geometric Optics and Wave Optics as an Example

作　　者：吴增瑜 钟鸣[2] WU Zengyu;ZHONG Ming(School of Teacher Education,Nanjing Normal University,Nanjing,Jiangsu210023;School of Physical Science and Technology,Nanjing Normal University,Nanjing,Jiangsu210023)

机构地区：[1]南京师范大学教师教育学院,江苏南京210023 [2]南京师范大学物理科学与技术学院,江苏南京210023

出　　处：《物理通报》2024年第5期31-34,38,共5页Physics Bulletin

摘　　要：以小孔成像这一“真问题”为例,从几何光学推导了小孔成像的原理和条件,明晰了“像”的实质为小光斑的集合;从光的电磁波本性出发,将光的直线传播理解为衍射不明显时的极限表现,进一步探讨如何从波动光学看待小孔成像.整合光现象与光本质,探讨大概念视角下的物理教学.Taking the“real problem”of keyhole imaging as an example,this paper deduces the principle and conditions of keyhole imaging from geometrical optics,and makes it clear that the essence of“image”is a collection of small light spots;Considering that the essence of light is electromagnetic wave,the linear propagation of light is understood as the limit performance when the diffraction is not obvious,and keyhole imaging is further discussed from the point of view of wave optics.This paper integrates the phenomenon and the essence of light,and discusses the physics teaching from the perspective of big concept.

关 键 词：大概念 小孔成像 几何光学 波动光学 

分 类 号：G633.7[文化科学—教育学]