#physic # [[Epistemic status]] #shower-thought # Gravitation >The difference, now, is that unlike Newton, Einstein has specified the mechanism by which gravity is transmitted: the warping of space. In Einstein's view, the **gravitational** tether holding the earth in orbit is not some mysterious instantaneous action of the sun; rather, it is the warping of the spatial fabric caused by the sun's presence. >~ [[Brian Greene]] >We know that [[Electromagnetic]] perturbations propagate at the [[Speed]] of [[Light]]. It is therefore tempting to reject the previous theory, recalling that **gravitation** propagates, according to [[Laplace]]'s calculations, at least ten million times faster than [[Light]], and that, consequently, it cannot be of electrodynamic origin >~ [[Poincare]] # Gravitational waves Seems to be caused by deformations of space-time from high speed objects? Does not work in [[Classical Physics]] (somehow)? #todo