许多物理概念不仅在近代物理学中,而且在所有自然科学和技术中都起着巨大的作用,那么质量的概念及在物理学中的作用是什么呢?质量概念最初由研究惯性现象而得到的。即确定了所有物体都具有这样一种客观性质:每一物体在一定的外界作用下会得到完全一定的加速度,以完全一定的方式改变自己的速度。每一物体的这种在一定作用下以一定方式改变自己速度的性质,是用一个叫作惯性质量的物理量来表示的。不同的物体,只要 Many physical concepts play a huge role not only in modern physics but also in all natural sciences and technologies. What is the concept of quality and its role in physics? The concept of quality was originally derived from the study of inertia . That is to say, all the objects are determined to have such an objective nature that each object will get a certain acceleration under the action of a certain external force and change its own speed in a completely certain way. The nature of each of these objects that changes its own velocity in a certain way under certain influence is expressed by a physical quantity called inertial mass. Different objects, as long as