Gravitational Wave for a pedestrian
  The physics of gravitational wave and its detection in the recent experiment by the LIGO collaboration is discussed in simple terms for a general audience. The main article is devoid of any mathematics, but an appendix is included for inquisitive readers where essential mathematics for general theory of relativity and gravitational waves are given. 
A K Chaudhuri
physics.pop-ph astro-ph.HE hep-ex hep-ph nucl-th