(urth) Future Echoes: Hut in the Jungle +
john.watkins04 at gmail.com
Fri Mar 20 10:56:43 PDT 2009
On Fri, Mar 20, 2009 at 1:53 PM, Jerry Friedman <jerry_friedman at yahoo.com>wrote:
> --- On Fri, 3/20/09, John Watkins <john.watkins04 at gmail.com> wrote:
> > Dorcas thinks that the Claw works by reversing time.
> > I've always thought
> > that that was wrong-headed--that it just works because
> > it's divine power--magic.
> > Now that I read this passage, however, I'm starting to
> > come around to
> > Dorcas's view. My knowledge of physics is pretty
> > minimal, but I have this
> > vague idea that time slows down as one speeds up and would
> > actually go
> > backwards if one could exceed the speed of light, which of
> > course is impossible.
> In Special Relativity, exceeding the speed of light would
> not make time go backwards. Formally, it would make time
> an imaginary number (one reason to think exceeding the speed
> of light is impossible).
> However, still in SR, if you could exceed the speed of light,
> you could go backwards in time in a roundabout way. Like
> the lady named Bright, you could go from point A at a
> certain time to point B at a similar time (whether before
> or after depends on your reference frame) and back to
> point A at an earlier time than when you set out (another
> reason to think exceeding the speed of light is
This may or may not be a crucial plot point in An Evil Guest.
> As I recall, there are suggestions of SR in the Sun books,
> but I don't see them as "hard science" based on it. They're
> much more speculative.
> I too enjoy Jordon's idea that the goblet once held wine.
> By the way, I annoyed Michael Andre-Driussi on this list
> by arguing with him about relativity (I think) and not
> mentioning till after he continued arguing that I teach
> physics. So to avoid that--trust me, I'm a physicist
> (sort of).
Thanks...as I said, my understanding of the topic is vague at best. I
appreciate the correction.
> Jerry Friedman
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