天平三刀刃的曲率半径对天平灵敏性有影响,而且从直观看,可以定性地说,刀刃为单半径越大(刀口越钝),对天平灵敏度的影响就越大。但具体影响有多大?能否定量描述?本文对此作出回答,并提供灵敏度与曲率半径的函数关系式和η～γ关系曲线。 理论上的天平,把三把刀看成没有曲率半径的三棱体,如下图。 The radius of curvature of the three scales of the balance has an impact on the sensitivity of the balance, and from an intuitive point of view, it can be qualitatively stated that the larger the radius of the blade (the blunt the blade), the greater the influence on the sensitivity of the balance. But how much is the specific effect? ​​Can a quantitative description? This article is to answer and provide a sensitivity and radius of curvature of the functional relationship and η ~ γ curve. Theoretical balance, the three knives as a prism without radius of curvature, as shown below.