What exactly is space time ?
Why cant we travell through the 4th dimention (time axis)?

DARTH VADER wrote:
What exactly is space time ?
Why cant we travell through the 4th dimention (time axis)?


http://www.google.com/search?q=spacetime

Worms doesn't know, that's why he sent you to a website. Spacetime is
a fictional place invented as a math construct so that we can calculate
the motion of objects through time.

According to Einsein, every object has a so-called "world line" which
indicates the object's past, current, and future position wrt its
motion through the universe.

AE invented a universe having the same exact dimensions which our own
universe contains, i.e., length, width, depth, and time. He did it to
show that he was not talking about our universe but an imaginary one.
His lemmings, however, insist he was talking about a real place and
they talk about it as if it exists. Go figure.

We CAN travel along the time axis of space-time. At one second per
second, a dimensionless quantity, time's rate, which is the speed of
time.

Time travels at the speed of time.

???????

Tha'ts a tautology.

A tautology is a tautology.

That's a metatautology.

"I never metatautology I didn't like

- Free Will Rogers.

Talk to ewe later, gators.

"TomGee" wrote in message oups.com...
Worms doesn't know, that's why he sent you to a website. Spacetime is
a fictional place invented as a math construct so that we can calculate
the motion of objects through time.

According to Einsein, every object has a so-called "world line" which
indicates the object's past, current, and future position wrt its
motion through the universe.

This has nothing whatsoever to do with Einstein.
A wordline is just a way of describing the path of an object by
giving its place as a function of time.
Example:
{ x = 0
{ y = v0 cos(pi/3) t
{ z = v0 sin(pi/3) t - 1/2 g t^2
are the parametric equations of the wordline of a bullet, shot in the
y-direction with initial speed v0, tilted to an angle of 60 degrees
and where the acceleration due to gravity is given by g.

The start of the bullet at time t=0 is given has (x,y,z) = (0,0,0),
So in the coordinate system that we have chosen, this event in
spacetimes gets the coordinates (t,x,y,z) = (0,0,0,0).

This way the past, present and future of an idealized point-object
is described by its worldline.

The set of all possible events happening at all places and at all
possible times is called spacetime.
Since in this spacetime one needs 4 numbers to describe events,
we call it 4-dimensional.

None of this has anything to do with relativity or with Einstein.
This could be lesson 1 in every elementary physics course.


AE invented a universe having the same exact dimensions which our own
universe contains, i.e., length, width, depth, and time. He did it to
show that he was not talking about our universe but an imaginary one.
His lemmings, however, insist he was talking about a real place and
they talk about it as if it exists. Go figure.

So, if you are so utterly ignorant about baby physics, what
do you think you are doing here?
http://users.pandora.be/vdmoortel/di...heOnlyWay.html
http://users.pandora.be/vdmoortel/di.../SmackDab.html
http://users.pandora.be/vdmoortel/di...bles/CRAP.html
http://users.pandora.be/vdmoortel/di...elescopic.html
http://users.pandora.be/vdmoortel/di...oRestMass.html
http://users.pandora.be/vdmoortel/di...reatMinds.html
http://users.pandora.be/vdmoortel/di...mbles/FoR.html

Dirk Vdm

On 17 Aug 2005 10:07:34 -0700, "DARTH VADER"
wrote:

What exactly is space time ?
Why cant we travell through the 4th dimention (time axis)?

Nasty Little Truth About Spacetime Physics:
http://www.rebelscience.org/Crackpots/notorious.htm

Hint: Nothing can move in spacetime.

Louis Savain

Why Software Is Bad and What We Can Do to Fix It:
http://www.rebelscience.org/Cosas/Reliability.htm

Dirk Van de moortel wrote:
"TomGee" wrote in message oups.com...
Worms doesn't know, that's why he sent you to a website. Spacetime is
a fictional place invented as a math construct so that we can calculate
the motion of objects through time.

According to Einsein, every object has a so-called "world line" which
indicates the object's past, current, and future position wrt its
motion through the universe.

This has nothing whatsoever to do with Einstein.


So you say.


A wordline is just a way of describing the path of an object by
giving its place as a function of time.


That's exactly what I said when I called it a math construct and not a
real place. Apparently you're having a problem with what is being
said.


Example:
{ x = 0
{ y = v0 cos(pi/3) t
{ z = v0 sin(pi/3) t - 1/2 g t^2
are the parametric equations of the wordline of a bullet, shot in the
y-direction with initial speed v0, tilted to an angle of 60 degrees
and where the acceleration due to gravity is given by g.

The start of the bullet at time t=0 is given has (x,y,z) = (0,0,0),
So in the coordinate system that we have chosen, this event in
spacetimes gets the coordinates (t,x,y,z) = (0,0,0,0).

This way the past, present and future of an idealized point-object
is described by its worldline.

The set of all possible events happening at all places and at all
possible times is called spacetime.
Since in this spacetime one needs 4 numbers to describe events,
we call it 4-dimensional.


And a set of anything is a math construct, is it not? Arithmetic, like
2+2=4. Not a real place, location, and not real, just a set of real
numbers. Does not exist adjacent nor parallel to nor out in the space
of our universe. It is a figment of the mind - a math construct.


None of this has anything to do with relativity or with Einstein.
This could be lesson 1 in every elementary physics course.


So what if it doesn't, even though that's your own opinion? Does that
make it any more real and existing somewhere other than in our minds or
as a graph or as a set of numbers?


AE invented a universe having the same exact dimensions which our own
universe contains, i.e., length, width, depth, and time. He did it to
show that he was not talking about our universe but an imaginary one.
His lemmings, however, insist he was talking about a real place and
they talk about it as if it exists. Go figure.

So, if you are so utterly ignorant about baby physics, what
do you think you are doing here?


Pot. Kettle. Black.

DARTH VADER wrote:
What exactly is space time ?

A four dimensional metric space of indefinite signature.

Why cant we travell through the 4th dimention (time axis)?

We can and we do. The rotating second hand on my watch is a clear
indication of this. Time on this level seems to have a directional
arrow associated with it, but that is a thermodynamic consequence
corresponding to increasing entropy. On a fundamental level, most laws
of physics don't care which direction time goes.

"TomGee" wrote in message oups.com...

Dirk Van de moortel wrote:
"TomGee" wrote in message oups.com...
Worms doesn't know, that's why he sent you to a website. Spacetime is
a fictional place invented as a math construct so that we can calculate
the motion of objects through time.

According to Einsein, every object has a so-called "world line" which
indicates the object's past, current, and future position wrt its
motion through the universe.

This has nothing whatsoever to do with Einstein.


So you say.


A wordline is just a way of describing the path of an object by
giving its place as a function of time.


That's exactly what I said when I called it a math construct and not a
real place. Apparently you're having a problem with what is being
said.


Example:
{ x = 0
{ y = v0 cos(pi/3) t
{ z = v0 sin(pi/3) t - 1/2 g t^2
are the parametric equations of the wordline of a bullet, shot in the
y-direction with initial speed v0, tilted to an angle of 60 degrees
and where the acceleration due to gravity is given by g.

The start of the bullet at time t=0 is given has (x,y,z) = (0,0,0),
So in the coordinate system that we have chosen, this event in
spacetimes gets the coordinates (t,x,y,z) = (0,0,0,0).

This way the past, present and future of an idealized point-object
is described by its worldline.

The set of all possible events happening at all places and at all
possible times is called spacetime.
Since in this spacetime one needs 4 numbers to describe events,
we call it 4-dimensional.


And a set of anything is a math construct, is it not? Arithmetic, like
2+2=4. Not a real place, location, and not real, just a set of real
numbers. Does not exist adjacent nor parallel to nor out in the space
of our universe. It is a figment of the mind - a math construct.


None of this has anything to do with relativity or with Einstein.
This could be lesson 1 in every elementary physics course.


So what if it doesn't, even though that's your own opinion? Does that
make it any more real and existing somewhere other than in our minds or
as a graph or as a set of numbers?

It shows what a stupid and ignorant pig you are.
Isn't that sufficient?
http://users.pandora.be/vdmoortel/di...heOnlyWay.html
http://users.pandora.be/vdmoortel/di.../SmackDab.html
http://users.pandora.be/vdmoortel/di...bles/CRAP.html
http://users.pandora.be/vdmoortel/di...elescopic.html
http://users.pandora.be/vdmoortel/di...oRestMass.html
http://users.pandora.be/vdmoortel/di...reatMinds.html
http://users.pandora.be/vdmoortel/di...mbles/FoR.html

Dirk Vdm

On 17 Aug 2005 14:27:30 -0700, "Igor" wrote:



DARTH VADER wrote:
What exactly is space time ?

A four dimensional metric space of indefinite signature.

Why cant we travell through the 4th dimention (time axis)?

We can and we do. The rotating second hand on my watch is a clear
indication of this. Time on this level seems to have a directional
arrow associated with it, but that is a thermodynamic consequence
corresponding to increasing entropy. On a fundamental level, most laws
of physics don't care which direction time goes.

Time does not change. Time is an abstract parameter used to denote
change in physics. To describe a change in time would require a
meta-time, and a meta-meta-time for the meta-time, ad infinitum.

Nasty Little Truth About Spacetime Physics:
http://www.rebelscience.org/Crackpots/notorious.htm

Don't let the morons in the physics community fool you, especially the
idiots, Dick van de merde and Sam Wormley. ahahaha... ahahaha...

Louis Savain

Why Software Is Bad and What We Can Do to Fix It:
http://www.rebelscience.org/Cosas/Reliability.htm