TERRORIST ALERT!!  This moron sends your replies to alt. moron.
>
>
Dirk Van de moortel wrote:
> "TomGee" <lvlus@hotmail.com> wrote in message
> news:1124313471.842473.270640@o13g2000cwo.googlegroups.com...
> >
> > Dirk Van de moortel wrote:
> > > "TomGee" <lvlus@hotmail.com> wrote in message
> > > news:1124303906.712214.317210@g49g2000cwa.googlegroups.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?
>    https://home.deds.nl/~dvdm/dirk/Physics/Fumbles/TheOnlyWay.html
>    https://home.deds.nl/~dvdm/dirk/Physics/Fumbles/SmackDab.html
>    https://home.deds.nl/~dvdm/dirk/Physics/Fumbles/CRAP.html
>    https://home.deds.nl/~dvdm/dirk/Physics/Fumbles/Telescopic.html
>    https://home.deds.nl/~dvdm/dirk/Physics/Fumbles/NoRestMass.html
>    https://home.deds.nl/~dvdm/dirk/Physics/Fumbles/GreatMinds.html
>    https://home.deds.nl/~dvdm/dirk/Physics/Fumbles/FoR.html
> 
>
Pot.  Kettle.  Black.