Register to reply 
Is time quantum at the microscopic level? 
Share this thread: 
#1
Dec1812, 08:55 AM

P: 73

Time has always baffled me. I have two questions for you.
1. What's the genesis of time? 2. Is time quantum at the microscopic level? Thank you. 


#3
Dec1812, 10:51 AM

P: 73

I did the search. Nothing except my questions and your answer!
Any takers? 


#4
Dec1812, 10:53 AM

PF Gold
P: 4,695

Is time quantum at the microscopic level?
I think your first question belongs on the philosophy forum (if it still exists) and your second question belongs on the QM forum.



#5
Dec1812, 11:02 AM

P: 1,097

What the heck is "what is the Genesis of time?" asking? (googled  beginning/origin)
it would be same as space. "Quanta" of time Planck time but seriously do a better search for interpretations of time. This is a forum of fact, not so much interpretation. 


#6
Dec1812, 01:06 PM

P: 73

I have already done an extensive search of the literature. Will do so more.
"Genesis" means origin/beginning/creation/.... as you said. So, Planck time is a fact! I have come to realize that I am not going to understand gravity without time and its origin. Thank you. 


#7
Dec1812, 01:26 PM

P: 1,097




#8
Dec1812, 01:42 PM

Mentor
P: 16,989




#9
Dec1812, 01:47 PM

P: 1,097

Is it proved to be the smallest unit of time?



#10
Dec1812, 02:47 PM

PF Gold
P: 6,130




#11
Dec1812, 03:17 PM

Mentor
P: 16,989




#12
Dec1812, 08:05 PM

P: 124

http://www.google.com/#hl=en&tbo=d&s...iw=836&bih=623 Or... http://www.google.com/cse?cx=partner...b=0&gsc.q=time OCR 


#13
Dec1812, 09:54 PM

P: 848

I wish I could help you understand time. At the fundamental level physicists do not comprehend what accounts for our notion of timethe "passage of time." It's psychological, but also it's something that physicists have been able to account for in some sense as a parameter in their mathematical equations. With the advent of special relativity, time becomes even more mysterious in the way it is incorporated into the spacetime concept. This removes us even further from the understanding of time at a fundamental levelalthough, in a mathematical sense, the spacetime theory enhanced the advancement of physics and even gave us a deeper insight into the universe. Many of those aspects would be considered too philosophical for discussion here, although some of these discussions have been given much latitude and flexibility by the forum monitors. Some would say that time is a value read on a clock. The problem is that clocks themselves are not time, they are physical objects that occupy space. We can put numbers on the clock and talk about the rate of rotation of the hands of the clock, but that is not time, intrinsically. Yes, physics can calibrate the clock and assign a definitional meaning to the readings on a clock, but that is not the same as providing a fundamental understanding of time. I don't think there will be much help for you here, but you might search the topic on amazon.com where you will find books like "About Time", "The Fabric of Time", "The Labyrinth of Time", and "The End of Time." Much of the discussions found in those books are not appropriate for this forum, since the kind of probing you are doing is not found in the formal scientific journals of physics, and much of it is considered speculative by the standards of this forum. Kurt Godel (one of the great logicians of mathematics and colleague of Einsteins at Princeton) once presented what he felt was a logical proof that time in physics was invalid. But, his arguments would be considered speculative and philosophicalnot appropriate for this type of forum where we emphasize help in understanding physics based on concepts in the main stream, universally accepted concepts with support from peerreviewed literature. You should particularly avoid discussions here that seem to fall into the philosophical category rather than physics. 


#14
Dec2012, 05:02 AM

P: 126

When we talk about time we have to be careful with the semantics. And indeed some philosophical and ontological aspects have to be taken into consideration. Even mathematicians have to face these issues in order to understand what the measured / observed numbers stand for.
As far as relativity is concerned in this forum section it is interesting to notice the difference of time interpretation between Lorentz and Einstein. Lorentz had to face the problem that his local time didn't make sense in his own ether theory. It was Einstein who solved that problem by considering his local time as physical real instead of only mathematical fictions. Lorentz admited his 'error': quote <<The chief cause of my failure was my clinging to the idea that the variable t only can be considered as the true time and that my local time t' must be regarded as no more than an auxiliary mathematical quantity. In Einstein's theory, on the contrary, t' plays the same part as t; if we want to describe phenomena in terms of x'; y'; z'; t' we must work with these variables exactly as we could do with x; y; z; t.>> Einstein made the t' a physical time. This lead to the existence of the physical 4D (block) spacetime. Unfortunately I sometimes have the impression that many mathematicians/physicists interpret the issue the other way around: instead of accepting t' as a physical time, they reduce Einstein's t to a mathematical number for not having to deal with any physical interpretation. And hence to put it bluntly the 4D Spacetime becomes only a mathematical model to organize mathematical numbers. It then becomes irrelevant to for example deal with the physical significance of the timecoordinate of a spacelike event. Lorentz Tranformations and time coordinates only really make sense in Einstein's Special Relativity, not in an ether theory (LET). Therefore it is a misconception that both LET theory and SR are equally valid theories because they deal with the same mathematics of the Lorentz Transormations. That's refuting the difference between physics and mathematics. Richard Feynman quote: <<... Physics is not mathematics, and mathematics is not physics. One helps the other. But you have to have some understanding of the connection of the words with the real world..>> (at minute 45:42: http://www.youtube.com/watch?feature...&v=kd0xTfdt6qw ) 


#15
Dec2012, 12:36 PM

Mentor
P: 16,989




#16
Dec2012, 09:41 PM

P: 1,097




#17
Dec2012, 10:48 PM

P: 168

truth of nature. Because mathematics lack human factors. 


Register to reply 
Related Discussions  
Numerical: Shortest Time of Travel of a Particle experiencing a TimeVarying Force  Advanced Physics Homework  0  
Difference between position time, velocity time and acceleration time graph  General Physics  6  
How do black holes merge when the singularity infinite density slows time to no time  Special & General Relativity  11  
Speed of time : temperature tells thermal time/proper time (Smerlak Rovelli)  Beyond the Standard Model  1  
Calculating Gravitational Time Dilation in black hole/Future Time Travel  Special & General Relativity  5 