Gravitation and spacetime Hans C. Ohanian
Publisher: WW Norton & Co

Download: PDF (3,273 kB) Buy this article Export: BibTeX or EndNote (RIS). The theory of gravitational lensing is reviewed from a spacetime perspective, without quasi-Newtonian approximations. We write the line element describing the interior space-time of a spherically symmetric star collapsing under the influence of self-gravity (in standard coordinates , , , and ) as where, , , and are yet to be determined. Ars Technica: Gravitational waves are theoretical weak distortions in spacetime caused by the movement of massive objects. This conclusion arises very simply: (i) Principle of equivalence implies that trajectories of light will be acted by gravity. Attempts to detect such waves involve building instruments of ever-increasing sensitivity. The nature of gravitation and electromagnetism has been determined. If electromagnetism the result of electromagnetic polarisation of the quantised space-time, gravitation is caused by its deformation (distortion). Gravitation and Spacetime Hans C. Quantization of fermions on Kerr space-time.