Mathematics (数学) S.D. Poisson (1781-1840): Life was only good for two things: to do mathematics and to teach it. K. Weierstrass (1815-1897): It is true that a mathematician ...

W. Heisenberg (1901-1976): When I meet God, I am going to ask him two questions: Why relativity ? And why turbulence ?  I really believe he will have an answer for the first. ...

A. Einstein: Imagination is more important than knowledge. 拿破仑：想象力统治世界。 格林.克拉克：人类所有的才能中，与神最相近的就是想象力。 苏格兰哲学家杜格尔德.斯特华特：想象的才...

光电资讯2020-05-19自20世纪60年代问世以来，激光已经成为人们生产生活中的“常规武器”：在工业领域，激光可轻松胜任打孔、切割和焊接等工作；在医学上，利用激光的高能量可治疗视网膜剥离等外...