The rotational characterizations of transitory start-up state,steady state and transitory stopping state of Crookes radiometer have been discussed systematically and quantitatively through experiment method using a self-made Crookes radiometer.

• 应用自制的辐射计,用实验测量的方法较系统地定量地讨论了它的转动宏观特性:辐射计受到光辐射时产生的瞬态启动、稳态和瞬态停止的特性。