Mystery of unsolved knowledge

Author: Yan Jianmin
Publisher:
Publish Date: 2003-10-01
Features: From astronomy and geography to human activities, from natural phenomena to social phenomena, from mathematics, physics, and chemistry to literature, history, and philosophy, there are still too many unknowns. This book presents the troublesome unknowns, which are also more intriguing unknowns, as well as the new observations and new explorations in the scientific community, to the.