Re: Thoughts on time and space


"brodix" <brodix@xxxxxxxxxxxxx> wrote in message news:1131061376.890070.208330@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

[unsnip]

> > > > But the notion of time as a dimension is based on the fact that
> > > > physics describes the world in terms of events, and we need
> > > > four numbers to unambiguously define an event. Three
> > > > numbers are needed to fix the location of the event, and one
> > > > number is needed to fix the time.
> > > > This way the set of all events in past, present and future forms
> > > > a 4-dimensional space in which we can describe and model
> > > > a great part of what we think we know of the world.
> > >
> > > Not according to the uncertainty principle. You cannot know both
> > > position and action at the same time.

[/unsnip]

> Dirk,
>
> >You probably mean position and momentum, or time and
> >energy etc...
> >You get the same symmetry here: there is nothing about time
> >that is more special than position.
> >What I said is true regardless the uncertainty principle.
> >This 4 dimensional spacetime is used in quantum physics
> >as well. The phrase "a great part of what we think we know
> >of the world" nicely includes what you are alluding here.
>
> I'm not arguing how to define the location of a particular point in
> time and space, but making a point about what time and space are.

You are arguing about something, but you use words that
are already in use for something else.
I already told you how the concepts of 'time' and 'dimension'
are used in physics. So it might be a good idea to take that
into account and try to find words for these things that have
not been taken yet.

Dirk Vdm


.

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