All Questions
23
questions
1
vote
2
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106
views
In spacetime time is a coordinate. Does it mean there is a single objective timeline for the Universe?
If every event can be defined with x, y, z, t coordinates - does it mean all events with the same t are composing the whole Universe at the moment t?
0
votes
1
answer
46
views
Average Time since the Big Bang
Can we define an average time for the entire universe relative to the Big Bang and call this the universal time since the beginning of the universe? (time, averaged relative to all possible reference ...
- 613
0
votes
0
answers
51
views
Was Big Bang the "START" of time? [duplicate]
I know that this question has been repeated a lot. But I still don't understand this concept.
Big bang created matter and space but how could it possibly create time?
If Big bang didn't create time ...
- 77
-2
votes
1
answer
261
views
IF heat was the absence of cold, how would that change physics [closed]
Back in high school, I had an argument with my physical science teacher. She said cold is the absence of heat. I asked why it couldn't be the other way around. She simply stated that was not possible. ...
0
votes
3
answers
242
views
Is there evidence for the existence of time? And what's eternalism (block universe)? [closed]
I have been told that: "time is an illusion. Rather than a chronological progression of events, all events occur simultaneously in space, and so right now, dinosaurs exist, WW2 just ended, you're ...
- 133
-5
votes
2
answers
399
views
Is time continuous or discontinuous? [duplicate]
As I notice I sometimes feel as if time is discontinuous it’s like a comic book where each act is planned out and the main character just comes there. Please give an explanation and correct me if I am ...
- 21
0
votes
0
answers
74
views
Will time exist in heat of the universe? [duplicate]
Will there be any sense of time during the heat death of universe? Since there is no interesting events I think you cannot measure time.
- 123
-1
votes
1
answer
60
views
Does anything exist in between a particular time period? [closed]
I don't think I can further elaborate this. It's pretty straight forward.
If we know something (say a tortoise) to exist at two points in time, then can we rightfully assume that it has existed ...
- 119
0
votes
0
answers
46
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The passing of time [duplicate]
Did the passing of time come before everything else? As in, how long was there "nothing"? And if we can put a time on that, wouldn't time itself be something? And if so, is time the thing that "always ...
- 1
-3
votes
1
answer
114
views
Is time really a 1-dimensional object that we only traverse through? [duplicate]
Is time really a 1-dimensional object that we traverse || is it possible that time can also be traversed horizontally. I think the later would also put it on a 2 dimensional plane.
- 197
1
vote
0
answers
286
views
Is the universe a lattice?
My understanding is that cause and effect create a partial order of events in the universe (and that relatively prevents anything stronger).
My understanding is also that it’s generally useless to ...
- 111
1
vote
0
answers
38
views
What does it mean by "the age or our universe"? [duplicate]
I am always puzzled by the notion "the age of our universe" because, correct me if I am mistaken, the universe is the entirety of the spacetime. So how can we measure how much time has the entire ...
- 11
0
votes
1
answer
58
views
Where would you get the most time, compared to everything else? [closed]
If from a photons perspective it doesn’t experience time and travels zero distance in zero time, and from anything else’s perspective light clearly travels and it takes time to do so, could there be ...
- 13
32
votes
7
answers
7k
views
Would there be no time in a universe with only light?
It is sometimes said, that if you stand still (in space), you travel through time at the speed of light. On the other side light never stands still, so it always only travels through space (at the ...
- 9,910
3
votes
3
answers
7k
views
What happened during the Planck Era of the Big Bang?
If you look at a big bang timeline before 10 to the -43 seconds you can see
Planck time - ????
So I googled it and was met with
Before 1 Planck Time
Before a time classified as a Planck ...
- 835