Register to reply 
Current theories of Time? 
Share this thread: 
#1
Jun2104, 09:21 PM

P: 8

Can someone please explain to me the current theories of Time? I have an idea I want to put forward to you all, but need to get a little groundwork in first. Based purely on what I learned in school, time is currently veiwed as linear, if so, how is this even possible? Much appreciated, thanks.



#2
Jun2204, 09:37 AM

P: 1,443

The modern concept of linear time is probably the most popular one. It is practically being used in the formulation of a physical theory. But theories of relativity (special and general) both combined time with space to form spacetime. And in string theories, spacetime's dimension were increased only for the space part while the time dimension remains linear.
If time is linear, the logical thing is for it to have two directions. But according to the theory of thermodynamics, only one arrow of time is found, this is the direction of increasing entropy. The other arrows of time are implied in: electromagnetic radiation always emanates outward from a source never inward; the cosmological expansion of space (spacetime?); and, in psychology, we remember the past but not the future. 


#3
Jun2304, 02:40 AM

P: 1,116

Might be the greatest load of rubbish you have every heard but here it is anyway. The Bob (2004 ©) 


#4
Jun2304, 07:16 AM

P: 1,443

Current theories of Time?



#5
Jun2304, 09:15 AM

P: 1,116

The Bob (2004 ©) 


#6
Jun2304, 09:34 AM

P: 1,443




#7
Jun2304, 09:49 AM

P: 1,116

The Bob (2004 ©) 


#8
Jun2304, 09:50 AM

P: 915

If such dimensions are compacted how would we ever know? Time would become immediate and so would the actions of "spooky" at any distance? We look ever deeper for the "interactive phases" that might represent solutions about that space? Everyone is saying no "hidden variables," yet we had not discerned relevance to Glast in geometrical considerations, so to all intensive purposes, this was hidden 


#9
Jun2304, 10:01 AM

P: 1,443




#10
Jun2304, 10:09 AM

P: 1,443

If I put myself in the shoe of a zero dimensional spacetime point, and ask myself who are my nearest neighbors and how many are there? The logical answer is six. This answer is based on the assumption that the topology of an infinitesimal sphere is equivalent to that of an infinitesimal cube as the length of edge of the cube approaches zero. 


#11
Jun2304, 10:18 AM

P: 915

Matter considerations can become very fluid and along side of this, gravitational considerations as well. So how well would we define such points without considering the space of considerations without understanding even in the gaussian world there was issues to contend with, that move along side of GR into the dynamical world of QM? 


#12
Jun2304, 10:21 AM

P: 1,443




#13
Jun2304, 10:21 AM

P: 1,116

The Bob (2004 ©) 


#15
Jun2304, 10:37 AM

P: 1,443




#16
Jun2304, 10:54 AM

P: 915

How would you then explain the topology of a sphere as a Genus Figure? 


#17
Jun2304, 11:42 AM

P: 1,443

A sphere, in reality, separate spacetime into an inside and an outside with no connection between points inside and outside except through points on the boundaring spherical closed surface. Once a point is picked on the surface, it is the same thing as creating a hole, literally speaking. 


#18
Jun2304, 06:50 PM

P: 915

http://scholar.uwinnipeg.ca/courses/...coffeecup.gif Topology is the branch of mathematics concerned with the ramifications of continuity. Topologist emphasize the properties of shapes that remain unchanged no matter how much the shapes are bent twisted or otherwise manipulated. http://scholar.uwinnipeg.ca/courses/...y/wormhole.jpg A wormhole is a genus 1 topological defect in space. http://scholar.uwinnipeg.ca/courses/...sofSpace.htm I think I should have better asked the question on deviation from discrete to continuity and how this would have been defined mathematically. In coordinate frames, as have been pointed out in various posts, none have really dealt with the issue of dimension other then within those confines. Continuity has to explain dimension, and leads from classical discriptions now faced with, higher recognition of four dimensions of space(cube to hypercube), within the issues of topology and recognition of curvature? The consistancy in geometrical expression has to be define through the different phases of that geometry(gravity has been defined up to this point) U(1) is a point, also a circle, it's length as a one dimensional string defined in the brane:) 


Register to reply 
Related Discussions  
Is time, inside an event horizon, timelike or spacelike?  Special & General Relativity  34  
Is light travel time for event time calculation usually implicit?  Special & General Relativity  5  
Coherent time vs duration time of the wave packet (photon)  General Physics  1  
Calculate time constant from the slope of dimensionless temperature vs time graph.  Introductory Physics Homework  2  
Since time slows down in a strong gravitational field, does time stop in a black hole  Special & General Relativity  12 