热学研究的对象是热现象的规律和理论,也就是物质的热运动以及热运动和其他运动相互转化所遵循的客观规律.它从两个方面进行研究:一是从微观角度,以分子动理论为基础揭示热现象的本质;二是从宏观角度,研究物体的压强、温度、体积的变化所遵循的规律,用能量观点研究系统的热运动 The object of thermal research is the laws and theories of thermal phenomena, which are the objective laws followed by the thermal movement of matter and the mutual transformation of thermal movement and other movements. It studies from two aspects: First, from the microscopic point of view, the theory of molecular dynamics The basis is to reveal the essence of the thermal phenomenon; the second is to study the laws followed by changes in the pressure, temperature, and volume of the object from the macroscopic point of view, and to study the thermal motion of the system from the perspective of energy.