Timeline for What is the unit of measurement for speed of time?
Current License: CC BY-SA 3.0
8 events
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| Dec 29, 2017 at 6:11 | comment | added | Selene Routley | @Notchmath..... heavily debated subject. John seems to subscribe here to an Aeternalist interpretation, as indeed do I, of things. This is basically the belief, in the absence of deciding physical evidence, that one can banish the "flow" notion. Other names for this position are "Perdurist" and "Detenser" - the "opposite" is "Tenser" or "Presentist" - you should probably look these terms up to further your understanding. | |
| Dec 29, 2017 at 6:09 | comment | added | John Rennie | @Notchmath: no, it's more complicated than that. Have a read through the links above and see if they help. | |
| Dec 29, 2017 at 6:08 | comment | added | Notchmath | So you could describe it as the angle between space and time? | |
| Dec 29, 2017 at 6:08 | comment | added | John Rennie | For more on this have a look at What is time dilation really? | |
| Dec 29, 2017 at 6:07 | comment | added | Selene Routley | @Notchmath Read John's other answer carefully. You can describe that phenomenon by simply saying observers moving relative to one another will measured the differences between the time co-ordinates of pairs of events differently. Notice how, by promoting time to a co-ordinate, you get rid of any talk of its "flowing", so one can indeed describe a great many physical phenomenons without reference to "flow". Certainly, this is true for General Relativity descriptions of the physical world. Whether or not the notion of time "flow" can be banished from all descriptions of physics is a .... | |
| Dec 29, 2017 at 6:06 | comment | added | John Rennie | @Notchmath: Yes, we do talk use phrases like time going slower and indeed I'm guilty of this myself. It's a convenient shorthand for something rather more complicated. What actually happens is that the two coordinate systems, ours and the moving objects, have been rotated out of alignment so a pure time displacement in our rest frame is a mixture of a time and space displacement in the other frame. | |
| Dec 29, 2017 at 5:53 | comment | added | Notchmath | But people talk about time going slower as you approach the speed of light; slower implies lower speed. What would the proper phrasing of this concept be? | |
| Dec 29, 2017 at 5:48 | history | answered | John Rennie | CC BY-SA 3.0 |