版权所有：华东理工大学物理化学教研室 9 (a) A ball resting on a warm surface; the atoms are under￾going thermal motion; (b) For the ball to fly upwards, some of the random vibra-tional motion would have to change i n t o c o o r d i n a t e d , directed motion. 4.1 The dispersal of energy Sketch for the distribution of energy (a) (b) The direction of spontaneous change版权所有：华东理工大学物理化学教研室 9 (a) A ball resting on a warm surface; the atoms are under￾going thermal motion; (b) For the ball to fly upwards, some of the random vibra-tional motion would have to change i n t o c o o r d i n a t e d , directed motion. 4.1 The dispersal of energy Sketch for the distribution of energy (a) (b) The direction of spontaneous change