5 ms·
One-Way Speed of Light
- throwawaymaths 3y agoFor anyone curious, There is an alternative formulation of GR (which is consistent with GR[0]) that drops the assumption that the speed of light is consistent: https://ui.adsabs.harvard.edu/abs/2009APS..NWS.C1024R/abstract https://ui.adsabs.harvard.edu/abs/2009APS..NWS.C1024R/abstra... [0] except the math is harder. I hear that there are some strange nonlocal effects that also appear, if someone is interested, it might provide an avenue for reconciling GR with QM which also has nonlocal effects (Einstein GR does not have nonlocality iirc) Last I checked tangherlini is alive and able to maybe teach someone a thing of two.
- nextaccountic 3y agoIf it allows for anisotropies in the speed of light, how is it consistent with General Relativity?
- ithkuil 3y agoAlso how would that affect cosmology? The farther an object is, the farther in the past we look at. If in one direction the speed of light was infinite, wouldn't we notice that objects there look more older than objects in the opposite direction whose image depicts them as they were a long time ago when they were younger?
- throwawaymaths 3y agoBecause there is a (possibly highly distorted) reference frame where the speed of light appears to be isotropic.
- patrakov 3y agoRelated: https://www.youtube.com/watch?v=pTn6Ewhb27k https://www.youtube.com/watch?v=pTn6Ewhb27k Title: Why No One Has Measured The Speed Of Light
- derbOac 3y agoWouldn't this have information-theoretic implications?
- dredmorbius 3y agoHowso?