[subversion]

many people think that the TOE should show that Einstein was wrong
how many people would agree with this?

also, if you think this is the case, do you think that the TOE might also show that Newton was wrong?

Or do you think that the TOE will be perfectly in line with what has come before?

[Guille]

Do you think that if Newton or Einstein were wrong I would be studying them in school? I don't think so.

It is said Einstein proofed Newton wrong, but no, what he did, is make it more exact and perfect, because Newton's works are good for small speeds (relative to c). Newton is used to calculate thinks for satelites and others. When things aproach speed of light, then, Eisntein is needed.

[AntonioLao]

what most physical theories trying to do is to find out whether reality is a field or a particle. But the equations are almost always the change of something with respect to time on one side of the equation and with respect to space on the other side.

The exception to this rule is Einstein's field equations of general relativity.

[Guille]

Originally Posted by AntonioLao what most physical theories trying to do is to find out whether reality is a field or a particle. But the equations are almost always the change of something with respect to time on one side of the equation and with respect to space on the other side. The exception to this rule is Einstein's field equations of general relativity.

what? reality is a concept, not a particle or a field......Isn't that correct?

[AntonioLao]

I meant objective reality, i.e., the environment, the external world in contrast to inner worlds of the mind.

Einstein once believed that the external world is beyond our full comprehension since it has an independent existence. The best we can do about it is to model by idealization using the language of mathematics. The validity of our models can then be verified by experimentations. But experimentations cannot recreate the math, it can only agree with the math. If they don't agree, either the math is wrong or the experiment is faulty or both but science always hopes that theory and experiment do always agree so that we can move on to the next step of the quest.

[Guille]

Originally Posted by AntonioLao I meant objective reality, i.e., the environment, the external world in contrast to inner worlds of the mind.

oooooooooooo...................... true.

That is probably the meaning of human existence: understand nature, and one thing of nature, is in fact, you.

[AntonioLao]

Originally Posted by GUILLE That is probably the meaning of human existence: understand nature, and one thing of nature, is in fact, you.

According to Einstein's special theory of relativity, by looking far enough into space, beyond the boundary of the universe, what you will see is the back of head. If you do see the back of your head, this proves that spacetime is curved and that the geodesic line of a curved Riemann surface is a great circle of a sphere.

[Guille]

Originally Posted by AntonioLao According to Einstein's special theory of relativity, by looking far enough into space, beyond the boundary of the universe, what you will see is the back of head. If you do see the back of your head, this proves that spacetime is curved and that the geodesic line of a curved Riemann surface is a great circle of a sphere.

yes? but that has no sence. Would I be whatching me exactly, or another me in toe very near parallel universe?.......

Anyway, what does Newton have to do with all this?

[AntonioLao]

In Newton's separation of absolute space and absolute time, you can go on forever without ever coming back to your starting point but spacetime geometry allows you to come back to the starting point if and only if you are moving along a geodesic line.

[Guille]

Originally Posted by AntonioLao In Newton's separation of absolute space and absolute time, you can go on forever without ever coming back to your starting point but spacetime geometry allows you to come back to the starting point if and only if you are moving along a geodesic line.

does then Special relativity allow to to move along a geodesic line in spacetime? I mean, in space, and in time? it wouild be strange just suddenly appearing in the beggining of the universe...........