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Topics	Replies	Views	Last post
Physics, Astronomy & Cosmology \ Is the vacuum synonymous with the absence of a medium? Started by geordief	3	247	Last post by jeffreyH 07/11/2019 19:54:39
Physics, Astronomy & Cosmology \ Can we say that we "fall through spacetime"? Started by geordief	8	339	Last post by geordief 31/10/2019 00:20:19
Physics, Astronomy & Cosmology \ Does the invariance of c have a role in the theories around Inflation/Expansion? Started by geordief	0	236	Last post by geordief 29/09/2019 15:25:15
Physics, Astronomy & Cosmology \ Special Relativity without Light Started by geordief	3	345	Last post by jeffreyH 22/09/2019 14:16:38
Physics, Astronomy & Cosmology \ Can we talk about a "Speed of Causality"? Started by geordief	1	305	Last post by yor_on 02/07/2019 10:49:51
Physics, Astronomy & Cosmology \ Is "Space" distinct from "nothingness"? (and the Vacuum) Started by geordief	36	1677	Last post by flummoxed 30/06/2019 22:47:32
Physics, Astronomy & Cosmology \ Is there a speed of propagation of energy? Started by geordief	5	534	Last post by jeffreyH 24/06/2019 22:30:40
Physics, Astronomy & Cosmology \ Does the Universe expand into itself? Started by geordief	0	290	Last post by geordief 12/06/2019 00:48:30
Physics, Astronomy & Cosmology \ What if the Earth was twice as massive? Started by geordief	21	915	Last post by Halc 10/06/2019 00:27:59
Physics, Astronomy & Cosmology \ What causes relative motion? Started by geordief	12	410	Last post by yor_on 03/06/2019 08:20:04
Physics, Astronomy & Cosmology \ Is spacetime always understood in relation to the speed of light (em radiation)? Started by geordief	24	988	Last post by Halc 22/05/2019 20:25:33
Physics, Astronomy & Cosmology \ Is the magnetic field in a particle accelerator static or dynamic? Started by geordief	2	419	Last post by evan_au 07/05/2019 21:00:59
Physics, Astronomy & Cosmology \ Does a photon travel the whole (ie continuous) length of its path? Started by geordief	2	387	Last post by Halc 30/04/2019 14:49:38
Physics, Astronomy & Cosmology \ What is an "event" ? Started by geordief	64	2616	Last post by PmbPhy 08/04/2019 20:26:11
Physics, Astronomy & Cosmology \ Is there a zero sum energy theory of the universe? Started by geordief	7	755	Last post by yor_on 21/01/2019 11:10:43
Physics, Astronomy & Cosmology \ When does a Black Hole form? Started by geordief	2	676	Last post by evan_au 04/01/2019 07:24:04
Physics, Astronomy & Cosmology \ Does acceleration (also) curve spacetime? Started by geordief	8	904	Last post by Halc 03/01/2019 18:15:52
Physics, Astronomy & Cosmology \ Is time dilation rigorously predicted from first principles? Started by geordief	8	930	Last post by 0 02/01/2019 18:39:59
Physics, Astronomy & Cosmology \ Can we say a bit about fields in physics? Started by geordief	3	618	Last post by Colin2B 27/11/2018 06:29:42
Physics, Astronomy & Cosmology \ Can a model merge with the "modeled"? Started by geordief	7	1010	Last post by geordief 08/09/2018 10:12:27