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Re: [Phys-L] simultaneity at a distance; past and future; light cones
From
: John Denker <
jsd@av8n.com
>
Date
: Sat, 3 Sep 2016 12:24:43 -0700
Executive summary: Any given point has a past light cone and a future
light cone. We can arrange events ``in chronological order'' if they
are separated by timelike or lightlike intervals ... but not if they
are separated by spacelike intervals.
Just now I put up a diagram and some discussion of this at:
https://www.av8n.com/physics/spacetime-welcome.htm#sec-past-future
Like so many things in special relativity, this is vastly easier to
understand if you look at the spacetime diagram.
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