摘要
引力场与静电场有相似之处，表现在万有引力定律与库仑定律，但它们的性质却大不相同：他们的场线指向有很大的区别，电场可屏蔽而引力场不行；库仑定律与万有弓l力定律相似却有不同之处：电场与磁场有转化关系而引力场却没有与其他场有转化关系；电磁辐射与引力辐射的产生如此相似但它们的性质却又不太一致等等。本文将探讨这方面的问题。本文采用定性与半定量分析，文中分析引力场时不用黎曼空间代以引力场线直观表示引力场，且为叙述方便，若本文中的“质量”没有特别指明，均指引力质量。
The gravitational field and the electrostatic field have similarities in the law of gravity and the Coulomb＇s law. But they are different in the characterizations： the direction of the field lines are different, the electrostatic field can be shielded but the gravitational field cannot; the Coulomb＇s law and the law of gravity have similarities and difference; electric field and magnetic field can be transformed, but the gravitational field can＇t be transformed to other field; The generation of the electromagnetic radiation and the gravitational radiation are similar but their characteristics are different. These issues are analysized qualitatively and semiquantitatively. The gravitational field is represented with gravitational field lines instead of the Riemann space, and ＂mass＂ in this text means gravitational mass in general.
出处
《大学科普》
2008年第2期11-13,共3页
Science Popularization in University
关键词
电场
引力场
电荷
质量
电流
质量流
电磁波
引力波
electrostatic field
gravitational field
electric charge
mass
electric current
mass flow
electromagnetic wave
gravitational wave
