摘要
着重阐明功和能的根本意义。在质点的功能定理和质心系的基础上说明摩擦生热及热力学第一定律的意义,最后说明普遍的能量守恒定律的建立过程及其意义。
This article discusses mainly the true meaning of the concepts of work and energy. Based on the work - energy theorem of a particle and the center of mass frame of reference, heat due to friction and the first law of thermodynamics are explained. At last, the establishment and the meaning of the general law of energy conservation are introduced bridfly.
出处
《物理通报》
2002年第12期5-7,共3页
Physics Bulletin
关键词
功能定理
机械能守恒
质心运动定理
内能
质心参考系
机械功
摩擦生热
热力学第一定律
能量守恒定律
Work - energy theorem Conservation of mechanical energy law of motion of the center of mass internal energy center of mass frame of referernce friction producing heat mechanical work heat transfer the first law of the thermodynamics the general
