OTOH Newton thought it was a canvas upon which events played out. Like I said earlier, there seem to be many opinions on exactly what time is.
I don’t understand how you can think of time having to progress to maintain the structure of the universe without then asking what it is or how it came about.
I don’t understand how you can think of time having to progress to maintain the structure of the universe without then asking what it is or how it came about.
You can't see, touch or taste a force, but you can measure its affect on motion.
So, at a fundamental level, a force is something that affects motion.
Similarly, you can't see, touch or taste time, but you can measure its passage.
It follows that to describe time at the fundamental level we need only say what time affects.
One thing I am sure of is that I now perceive time as moving faster than it did when I was younger!
"I know what time is until you ask me for a definition for it, and then I can't give it to you." - St. Augustine
So, at a fundamental level, a force is something that affects motion.
Similarly, you can't see, touch or taste time, but you can measure its passage.
It follows that to describe time at the fundamental level we need only say what time affects.
One thing I am sure of is that I now perceive time as moving faster than it did when I was younger!
"I know what time is until you ask me for a definition for it, and then I can't give it to you." - St. Augustine
I seem to have time on my hands.
All I know is there is reality and then there are elaborate models of reality created by evolved ape-men and ape-women.
All I know is there is reality and then there are elaborate models of reality created by evolved ape-men and ape-women.
I saw The Point when it was broadcast on TV circa 1970. It turned out he did a wide variety of good music. He was (imho) a tortured genius. It was many more years until I realized he also sang that "Everyboy's Talkin' At Me" song.
I saw this in the last year (probably a good prequel to Get Back), it's a biopic, amazing and heartbreaking, got lots of OTHER amazing people in it (Warning: Yoko, but I don't think she sings), and of course Content And Language Warning, both in general and specifically about the song for his ex-wife: "all that talent and he writes THAT song?"
Perhaps my favorite is "Jump Into The Fire" a great rocker.
OOTC: Thanks to The Laws Of Physics, whatever they are, whenever they formed, that allowed us to create audio reproduction equipment that allows us to hear such things.
I saw this in the last year (probably a good prequel to Get Back), it's a biopic, amazing and heartbreaking, got lots of OTHER amazing people in it (Warning: Yoko, but I don't think she sings), and of course Content And Language Warning, both in general and specifically about the song for his ex-wife: "all that talent and he writes THAT song?"
OOTC: Thanks to The Laws Of Physics, whatever they are, whenever they formed, that allowed us to create audio reproduction equipment that allows us to hear such things.
Seems to me the question as to what time affects is still an open one. We still don’t know how gravity causes time to change (clocks run slower in a gravitational field) or whether it is some deeper phenomena that gives rise to mass as a result of time (does mass accrete in a time well - ie where time is running slower relative to its surrounding?) . If you have a body floating in space not experiencing any gravitational forces and you accelerate it, it acquires ‘weight’ during acceleration which is also when its relative time is being changed or shifted.You can't see, touch or taste a force, but you can measure its affect on motion.
So, at a fundamental level, a force is something that affects motion.
Similarly, you can't see, touch or taste time, but you can measure its passage.
It follows that to describe time at the fundamental level we need only say what time affects.
One thing I am sure of is that I now perceive time as moving faster than it did when I was younger!
"I know what time is until you ask me for a definition for it, and then I can't give it to you." - St. Augustine
Does time change fundamentally in the situations you describe, or is it just our measurement of time that changes?
“Measurement of time”
I question the characterization. It started out as counting repeating events, like sunrises. Time was how many sunrises we observed. Time was not some entity itself. Nowadays, we think time is a dimension we can travel forwards and backwards along. Well, good luck with that; I’m with the cavemen on this.
I question the characterization. It started out as counting repeating events, like sunrises. Time was how many sunrises we observed. Time was not some entity itself. Nowadays, we think time is a dimension we can travel forwards and backwards along. Well, good luck with that; I’m with the cavemen on this.
The illusion of distinction does not in any way nullify the existence of time. The present is a constant reminder.Good luck with discovering the fundamental nature of time!
I consider that time is real in the sense that its progression is necessary to maintain the structure of our Universe.
"People like us, who believe in physics, know that the distinction between past, present, and future is only a stubbornly persistent illusion." - Albert Einstein
I think there’s got to be more to it’s fundamental nature - that’s all I’m saying. And there is probably a link in there somewhere to entropy and energy.
Seems the subject is too emotive, so I’ll drop it.
😊
Travelling to any region of spacetime other than your future light cone is generally considered a causality violation.
In relativity theory, causality means that a cause cannot have an effect outside its future light cone.
This is consistent with the restriction that mass and energy cannot travel faster backwards in time.
Good call - or you could look to Wheeler and DeWitt's application of quantum theory to the Universe.
They came up with a complex equation which, shockingly, did not include time! 😵
Attachments
I was too late to edit out the word 'faster' in the above sentence.
It is but a remnant of the associated restriction that mass and energy can not travel faster than light.
Greetings!
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... and temperature - surely, inside a region with 0K, time stand still as in: no time is passing.
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Unfortunately, there would be no way to get a region all the way to absolute zero in a finite amount of time.
Isn't time a pain in the butt! 😀
Isn't time a pain in the butt! 😀
There are many things discussed here that there is no way to get - it hasn't hindered us yet ;-D
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aaargh....
There's still good hypotheses that time isn't real - especially in the sense of it having a direction. Then there's the theory (that Sabine H likes) that everything is predetermined, which makes time a bit of a curiosity. Whatever the truth is, if there is a single truth, the perceived reality of time passing will be very hard to shake off. Unless you are Benjamin Button. Or there was Brian Aldiss' great book Cryptozoic. I'm always a sucker for a well written time travel story....
But then, as the saying goes, Time flies like an arrow, fruit flies like a banana.......
And now is deffo G&T time....
There's still good hypotheses that time isn't real - especially in the sense of it having a direction. Then there's the theory (that Sabine H likes) that everything is predetermined, which makes time a bit of a curiosity. Whatever the truth is, if there is a single truth, the perceived reality of time passing will be very hard to shake off. Unless you are Benjamin Button. Or there was Brian Aldiss' great book Cryptozoic. I'm always a sucker for a well written time travel story....
But then, as the saying goes, Time flies like an arrow, fruit flies like a banana.......
And now is deffo G&T time....
The thing is you're "in" the present, watching it tick along, the only eternal state. Do we not move at c? I think Paul Simon in a lyric said, "we are the memory of God".
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