If light speed (not in a vacuum) was about human walking speed ...

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If light speed (not in a vacuum) was about human walking speed ...
Did any sci fi writer try that?
 

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  • #3
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I met this idea once in a kind of 'relativity for young adults' book.
 
  • #4
Ryan_m_b
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Can’t think of any. Changing the speed of light would change so many other things that it is linked to. Greg Egan is a very good SF writer who goes heavily into the science of his books (and I mean heavy), he wrote a trilogy set in a universe where light has mass and explored the consequences of that:

https://www.goodreads.com/book/show/9756310-the-clockwork-rocket
 
  • #5
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Redshift Rendezvous by John E. Stith.

There's a singularity at the centre of the spherical ship, so time, light and gravity run differently on each onion-layered deck. On one inner deck, space-time curves such you can see around the circumference. If you stand and wait a little while, you can see your own back...

The author's extensive notes do apologise for taking liberties with Relativity. These necessitate a 'life-belt' to maintain the wearer's physiology despite the deranged physics.

IMHO, Mild Suspension of Disbelief aside, it is a well-wrought tale, full of twists, turns, villains and derring-do.
 
  • #6
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If light speed (not in a vacuum) was about human walking speed ...
Did any sci fi writer try that?
You might find this (sadly) abandoned game demo interesting . . .
 
  • #7
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Thanks for the interesting replies.
 
  • #8
bob012345
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Can’t think of any. Changing the speed of light would change so many other things that it is linked to. Greg Egan is a very good SF writer who goes heavily into the science of his books (and I mean heavy), he wrote a trilogy set in a universe where light has mass and explored the consequences of that:

https://www.goodreads.com/book/show/9756310-the-clockwork-rocket
If light was very slow I think it would effectively have mass and thus greatly enhanced momentum. Then rockets could work just by shining lasers or microwaves out the back for propulsion. At least for SF.
 
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  • #9
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If light speed (not in a vacuum) was about human walking speed ...
Did any sci fi writer try that?
In the first chapter of "Mr Tompkins in Wonderland" George Gamow treats c as a a bit above bicycle speed.
 
  • #10
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In the first chapter of "Mr Tompkins in Wonderland" George Gamow treats c as a a bit above bicycle speed.
This is one of my favorite books from long ago. I highly recommend it if only for the entertainment of seeing how he presents a variety of concepts in an exagerated form.
 
  • #11
CWatters
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Redshift Rendezvous by John E. Stith.

There's a singularity at the centre of the spherical ship, so time, light and gravity run differently on each onion-layered deck.
Didnt Dr Who have something similar in a recent episode?

Aside: My father did some of the lighting for Dr Who back in the 1960s and 70s.
 
  • #12
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Didnt Dr Who have something similar in a recent episode?
Season 10, Episode 11.
 
  • #13
ZapperZ
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If light speed (not in a vacuum) was about human walking speed ...
Did any sci fi writer try that?
I don't quite understand what is so exotic about this. After all, Lene Hau slowed down light to 17 mph in 1999, and our world didn't turn "sci-fi" (she and her group went all the way and slowed it down to a complete halt a few years later).

Zz.
 
  • #14
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I don't quite understand what is so exotic about this. After all, Lene Hau slowed down light to 17 mph in 1999, and our world didn't turn "sci-fi" (she and her group went all the way and slowed it down to a complete halt a few years later).

Zz.
As I interpret the OP, the question is about slowing the characteristic speed of spacetime, not the actual speed of light pulses. I do not believe the former has yet been achieved ;)
 
  • #15
ZapperZ
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As I interpret the OP, the question is about slowing the characteristic speed of spacetime, not the actual speed of light pulses. I do not believe the former has yet been achieved ;)
The OP said (emphasis mine):

If light speed (not in a vacuum) was about human walking speed ...
Isn't this simply the speed of light in a medium? It has nothing to do with "characteristic speed of spacetime" if it is simply the speed of light being slowed down ".. not in a vacuum..".

Zz.
 
  • #16
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The OP said (emphasis mine):
Agreed, but as you say such a question is not really worth asking. Hence I attempted to read the OPs mind ;)
 

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