What is time??

Pincho Paxton said:
Not all physical laws have a cause that we have calculated. The cause that we never calculate is scale of fundamental particles. Why are they a certain size? What causes a fundamental particle to choose a scale? I mean, they are made from nothing but themselves, so they could be any size without cause. The scale of fundamental particles is most likely a restriction of pressure, that they have nowhere to scale to anymore. If fundamental particles have reached a restriction that's all we need as the first cause of time.
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' Formation of fundamental particles ' is a process or they are just existing . This process takes some time or time is just existing .
 
If we follow the principle that " total mass and energy of our universe is constant " ; it is so at the time of formations of fundamental particles .
 
Pincho Paxton said:
Science has noticed that particles can pop into existence. I'm not allowed to add anything to that.
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Sure you are. You just have to make sure that what you add qualifies as science. It doesn't even have to be good science, just as long as it's not woo-woo, supernaturalism or some other sort of antiscience.
 
I suspect this is not an 'absolute reality' as far as we can tell it is just our senses interpretating the matter and motion. Time is a consequence and becomes the frame work for our senses to operate to create experience.
 
Pincho Paxton said:
If, for every particle there is an anti-particle, then you can expand the universe two particles at a time. This would not show up.
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Particle and anti-particle can exist in pairs ; but this will not violate the conservation of ' total mass and energy ' of our universe .
 
Pincho Paxton said:
I don't understand. I thought that Space, and Space-time were the same thing.
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Curvature of spacetime generates force . But, Does curvature of space generates force ? Curvature of space bends light . But, does curvature of spacetime bends light ?

So, there is some difference between space and spacetime .
How do you have space with no space time in it?
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I am not denying spacetime . I am only saying that , space and spacetime are different .
 
Dywyddyr said:
I wonder, just off the top of my head, if that's why they're two different terms.
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What is your point here?
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My point is that space and spacetime are different . So, time also becomes different from space and spacetime . Spacetime is not space + time . Spacetime is totally different from space and time . Time does not slowdown the clock ; but spacetime slows down the clock .
 
hansda said:
As explained in wiki , spacetime is a mathematical model ; but space and time are reality . There is no reality as 'space + time' , which in reality can be called as space-time .
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Maybe you have trouble reading:
It is really the combination of space and time.
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an event is a point in spacetime specified by its time and place.
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Dywyddyr said:
Maybe you have trouble reading:
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Reality of space-time is that reality , curvature of which generates force . All other meaning of spacetime is just mathematical-model ( As is clearly explained in the first line of the wiki site ) .
 
hansda said:
( As is clearly explained in the first line of the wiki site ) .
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So you didn't actually read it then.
Try again.
But this time read the entire article, not just the bits you "agree" with.

Reality of space-time is that reality , curvature of which generates force
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This is just specious uninformed double-talk to avoid realising that what you mean is spacetime is a reality.
 
I sometimes think that wiki might be causing more damage to science than otherwise.

People can grab wiki quotes and never have to know what they really mean.
 
Aqueous Id said:
Any parameter can be a measure of change. A gradient represents something changing over space (not time) like a temperature gradient in the ocean as you dive.
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I understand what you said however change over space (not time) is categorically immeasurable without time, right or wrong?
 
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