“质量”是力学乃至物理学中最重要的基本概念之一,对这一概念的认识和理解,也是物理学中最重要的中心问题之一。 1.质量与惯性 学习物理学的人,最初接触到质量的概念时,质量被叙述为“物体含有物质的多少”,牛顿自己就认为物体的质量是物体“所含物质的量”。事实上,这一认识是极其含糊的:两个物体如果是不同的物质构成,怎么能说某一个比另一个含有较多或较少的物质呢?严格的质量概念涉及到物理学中另一个极为 “Quality” is one of the most important basic concepts in mechanics and even in physics. Understanding and understanding of this concept is also one of the most important central issues in physics. 1. QUALITY AND Inertia People who study physics first came into contact with the concept of quality, and quality was described as “how much material it contained.” Newton himself considered the quality of an object to be “the amount of substance contained in the object.” In fact, this perception is extremely vague: how can one object be said to contain more or less than one substance if it is a different matter? The strict concept of quality involves another in physics Extremely