《从牛顿定律到爱因斯坦相对论》http://t.cn/zOpG5Cb

《宇宙的创生》http://t.cn/zOpG5CU

《力学概论》pdf版 http://t.cn/zOpwJkk

Written by Shengdong Zhao

Shen is an Associate Professor in the Computer Science Department, National University of Singapore (NUS). He is the founding director of the NUS-HCI Lab, specializing in research and innovation in the area of human computer interaction.