Re: What forth dimension?

Posted by ronron on December 07, 19100 at 12:00:43:

In Reply to: What forth dimension? posted by Brian on October 04, 19100 at 13:20:55:

remember that time and space got tied together when einstein
advanced the two postulates of SR - the constancy of the speed
of light in vacuum, and the equivalence of inertial observers.
if this is to be true, you have to have more than just space
issues as in your question. you have to admit the possibility
of two events such that a material body cannot reach one from
the other because it would violate the
first postulate of SR, the postulate on velocity of light.
since
velocity involves time and space, and in SR is kept constant,
you have to manipulate both time and space to keep c = constant.

after 1905, space and time had to become spacetime and you can't
separate them again. this in turn lead to the problem with
newtonian action-at-a-distance gravitation and to GR.

Follow Ups: (Reload page to see most recent)

• Re: What forth dimension? Brian 12/12/100 (1)
  • Re: What forth dimension? ronron 12/13/100 (0)

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