光学中的逻辑符号法则  

THE LOGIC SIGN CONVENTION OF OPTICS

作　　者：史天治[1] 

机构地区：[1]淮阴师范学院物理系,江苏淮安223001

出　　处：《巢湖学院学报》2008年第3期144-147,共4页Journal of Chaohu University

摘　　要：论文纠正了大量光学教材中的逻辑错误与用词不当,对于几何光学的教学具有十分重要的意义。距离、长度、宽度、高度、路程与折射率均不可能为负数。物距、像距与焦距都是距离,故也不可能为负数。角度是角标的绝对值。点在绝对静止笛卡尔坐标系中的坐标为绝对坐标。P点相对于A点的相对坐标等于P点的绝对坐标减去A点的绝对坐标。坐标原点不同而对应坐标轴方向相同的坐标系称为平移坐标系。相对坐标与平移坐标系无关。The article corrects a lot of logical errors and misnomers in many optics textbooks and is very important in the teaching and learning of geometrical optics. Distance, length, width, height, path length or refractive index cannot be negative. Object distance, image distance and focal length are distances, so they cannot be negative. Angle is the absolute value of angular coordinate. The absolute coordinates of a point is its coordinates in absolute rest Cartesian coordinate system. The relative coordinates of point P with respect to point A equal to the absolute coordinates of P minus the absolute coordinates of A. Two Cartesian coordinate systems with only different origins are called translational coordinate systems. Relative coordinates are invariants for translational coordinate systems.

关 键 词：符号法则 几何光学 坐标 逻辑 距离 

分 类 号：O435[机械工程—光学工程]