It is a sincere question.
Nearest I have got to it is the Conics:
An elaborate Mathematical Joke.
Maybe just me.
Nearest I have got to it is the Conics:
An elaborate Mathematical Joke.
Maybe just me.
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Maybe just you that's got the incentive to watch a 1hr 15m video?
Is there no quicker way for you to get to The Point? 😞
I was going to say something about the light cone of relativity...
https://en.wikipedia.org/wiki/Light_cone
But I need to finish Lee Smolin's book about time. It's a slow read.
https://en.wikipedia.org/wiki/Light_cone
But I need to finish Lee Smolin's book about time. It's a slow read.
I‘s hazard that at the non-quantum level, it’s all down to entropy, or stated another way, stuff happens as energy decays into time.Why does anything happen in this crazy universe?
Ah yes. An interesting concept. My wording was not by accident if once considers time and energy flip sides of the same coin.
It seems it’s in our nature to assume time is this canvas upon which everything plays out - ie it is independent of all else. Einstein showed that it wasn’t. What if we take that idea a step further?
It seems it’s in our nature to assume time is this canvas upon which everything plays out - ie it is independent of all else. Einstein showed that it wasn’t. What if we take that idea a step further?
You can represent events in your life on a spacetime diagram.
The positions of events in space are plotted along the horizontal axis and the positions of events in time are plotted along the vertical axis.
(This neglects two spatial dimensions for clarity, and because it's hard to draw a four-dimensional diagram on paper!)
The events in your life can be plotted on the spacetime diagram, with the origin representing the place and time of your birth.
When all the plotted points are joined together the resulting line is called a worldline which represents every moment of your life.
Another feature of the spacetime diagram are the diagonal lines passing through the origin (see attachments). These form the lightcones that Steve has mentioned, and which play a very important role in relativity.
The lightcone above the the horizontal axis is known as the future lightcone of your birth and it marks out the the region of spacetime that you could possibly visit.
The lightcone below the horizontal axis is known as the past lightcone of your birth and represents the time before your birth. Your parents' worldlines must be contained within your past lightcone, as are every one of your ancestor's worldlines stretching back to the origin of life on Earth 4 billion years ago!
CREDITS: I thank Prof. Brian Cox for his writings from which I've extracted the above summary.
Attachments
Time remains rather elusive. Despite Einstein's space time, there is still an argument that it doesn't actually exist...
Personally, I'll stick with Douglas Adams - “Time is an illusion. Lunchtime doubly so.”
Personally, I'll stick with Douglas Adams - “Time is an illusion. Lunchtime doubly so.”
I don’t believe it’s an illusion. I do know that you cannot create distance between objects without expending energy. That’s what acceleration is - it’s the force experienced by an object as its relative time wrt its surroundings is changed through the expenditure of energy. If you remove the accelerating force, the object coasts along in its new reference frame.
If objects are apart, they will experience different relative times wrt each other. So in effect, you create time between things when energy is expended. This is of course completely relativistic and the passage of time quite ‘elastic’ depending upon relative velocities and/or the presence of a gravitational field.
I mentioned many posts back that to me, time was ‘thick and heavy like treacle’. I said that because to change an object relative time wrt other objects you have to expend a lot of energy to create just a small difference, and especially so in the presence of a gravitational field.
I find the notion of time and energy quite fascinating as you can probably gauge and good fun to ponder these deep mysteries 😊
If objects are apart, they will experience different relative times wrt each other. So in effect, you create time between things when energy is expended. This is of course completely relativistic and the passage of time quite ‘elastic’ depending upon relative velocities and/or the presence of a gravitational field.
I mentioned many posts back that to me, time was ‘thick and heavy like treacle’. I said that because to change an object relative time wrt other objects you have to expend a lot of energy to create just a small difference, and especially so in the presence of a gravitational field.
I find the notion of time and energy quite fascinating as you can probably gauge and good fun to ponder these deep mysteries 😊
Well it’s special relativity stuff. PBS Spacetime has great videos on this topic, highly recommended. (Short answer: not really 🥴)
I'd like to think we can discuss and explore some of the things here that do not seem to have clear explanations elsewhere! That is not to say we will come up with an answer, but these are very interesting subjects to explore. There is no clear explanation for what time is at the most fundamental level (quite a few different interpretations from leading physicists for example). Ditto EMR - we have Maxwell's equations that tell us how it behaves, but no fundamental explanation as to how a photon can propagate across 13 odd billion LY or across a distance of 1 cm.
🙂
🙂
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 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
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