物理学是一门实验学科。在物理学中,每个概念的建立,每个定律的发现,都有坚实的实验基础,实验在物理学的发展中及对人类社会的发展有着巨大的意义和推动作用。例如,在西方,古巴比伦人曾用“日晷”和水中计时的方法来计时:我国古代人发明杠杆和滑轮的混合体辘轳来达到提升物体时省力的效果;又如指南针的发明为沿海方向的辨别提供可靠的仪器;在近代,瓦特看到水烧开冲开壶盖而 Physics is an experimental discipline. In physics, the establishment of each concept and the discovery of each law have solid experimental foundations. Experiments have great significance and impetus in the development of physics and in the development of human society. For example, in the West, the Babylonians used the “sunsets” and the timekeeping method of the water to time: the ancient Chinese invented a mixture of levers and pulleys to achieve the effect of labor saving when lifting objects, and the compass was invented along the coast. Directional discrimination provides a reliable instrument; in modern times, Watts saw the water boil and opened the lid.