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Topic: What are space and time?
Replies: 184   Last Post: Nov 19, 2012 9:14 PM

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jmfbahciv

Posts: 65
Registered: 5/6/10
Re: What are space and time?
Posted: Jul 27, 2010 8:37 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Vladimir Kirov wrote:
>
> jmfbahciv:

>> Vladimir Kirov wrote:
>> >
>> > jmfbahciv:

>> >> [spit a newsgroup]
>> >>
>> >> Vladimir Kirov wrote:

>> >> >
>> >> >
>> >> >
>> >> > I consider that space - nonconstant ensemble.
>> >> > Term a space-time is error since space bound with time and time is
>> >> > part of space. Nonpossible to visualize the space without time and
>> >> > time without space.
>> >> >
>> >> > With respekt!
>> >> >

>> >> Oh, good grief. The term space-time implies a geometry which is
>> >> not Euclidean.
>> >>
>> >> /BAH

>> >
>> > If space to separate of time that this will already non space, but
>> > statistical ensemble, to which possible add time.
>> >
>> >

>> Euclidean geometry adds as in c^2=a^2+b^2
>>
>> The geometry used in space-time subtracts. Lorentz geometry.
>> Read the first 5 sections of _Space-time Physics_ by
>> Taylor and Wheeler.
>>
>> /BAH

>
> If in Euclidean space there is no time is a set.
> But time is present, but it not formal in definition, and is shown at
> operations on set.
> We take, for example, space of names. In definition space time is
> absent, but at operations on set it is quite defined in force
> determinations spaces.
>
> So if we speak the space-time, that imply that beside this space 2
> time.
>

I'm having trouble understanding what you wrote. Geometries have
a set of axioms and are built based on those axioms. Space-time
uses a geometry which has an axiom which is different from
Euclidean geometory. The reason Lorentz geometry was created
is because it's more useful than Euclidean geometry to do
certain things, e.g. relativity calculations and predictions.

Are you interested in reading the first 5 sections of
_Space-time Physics_ to see how that geometry is used?


/BAH


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