运动是物质的存在形式。没有不运动的物质,也没有无物质的运动。从简单的机械运动到复杂的思维运动、其形式是多种多样的。和运动形影相伴的就是能量,每有一种运动形式就有一种能量形式与之对应,且可做为该种运动强度的度量。如机械运动有机械能、电运动有电能,光运动有光能,化学运动有化学能,核运动有核能等等。物质世界的复杂性在于运动形式的多样性和它们之间转化的可能性。 能量形式虽有多种,但能量的传递和转化形式却只有两种,就是功和热。热力学早已给 Movement is a form of material existence. There is no movement of material, there is no material movement. From simple mechanical movement to complex thinking movement, its form is varied. And movement accompanied by the shadow is the energy, there is a form of energy for each form of movement corresponding, and can be used as a measure of the intensity of exercise. Such as mechanical movement of mechanical energy, electric movement of electrical energy, light movement of light energy, chemical movement of chemical energy, nuclear movement of nuclear energy and so on. The complexity of the physical world lies in the diversity of forms of movement and the possibility of transformation between them. Although there are many forms of energy, but there are only two forms of energy transfer and transformation, that is, work and heat. Thermodynamics have long been given