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what is faster than light?

what is faster than light?  
Timothy Law
 Re: what is faster than light?  
robert j. kolker
 Re: what is faster than light?  
Franz Heymann
 Re: what is faster than light?  
CWatters
 Re: what is faster than light?  
Old Man
 Re: what is faster than light?  
Morituri-|-Max
 Re: what is faster than light?  
Franz Heymann
 Re: what is faster than light?  
The Ghost In The Machine
 Re: what is faster than light?  
Martin Hogbin
 Re: what is faster than light?  
Greysky
From:Timothy Law
Subject:what is faster than light?
Date:Mon, 24 Jan 2005 02:16:29 GMT
Hi, is there anything faster than light? Serious answers please.
Thank you.
From:robert j. kolker
Subject:Re: what is faster than light?
Date:Sun, 23 Jan 2005 21:20:57 -0500


Timothy Law wrote:

> Hi, is there anything faster than light? Serious answers please.
> Thank you.

Faster than light in vacuo? There is no known object or process that
moves at greater than light speed in vavuo. If you find something
faster, will you tell us about it?

Bob Kolker
From:Franz Heymann
Subject:Re: what is faster than light?
Date:Mon, 24 Jan 2005 07:43:44 +0000 (UTC)

"Timothy Law" wrote in message
news:1UYId.8659$rp1.7277@newsread3.news.atl.earthlink.net...
> Hi, is there anything faster than light? Serious answers please.
> Thank you.

Yes any of very many kinds of phase velocity.
The waves in a waveguide, for instance, have a phase velocity larger
than that of light.

Franz
From:CWatters
Subject:Re: what is faster than light?
Date:Mon, 24 Jan 2005 08:39:05 GMT

"Timothy Law" wrote in message
news:1UYId.8659$rp1.7277@newsread3.news.atl.earthlink.net...
> Hi, is there anything faster than light? Serious answers please.
> Thank you.

Schrödingers cat perhaps - eg spooky action at a distance - but does that
count as a "thing".
From:Old Man
Subject:Re: what is faster than light?
Date:Mon, 24 Jan 2005 01:24:10 -0600

"Timothy Law" wrote in message
news:1UYId.8659$rp1.7277@newsread3.news.atl.earthlink.net...
> Hi, is there anything faster than light? Serious answers please.
> Thank you.

One event follows another because causality runs
no faster than the speed of light. Time and location
are covariant but the order of causally related events
is invariant.

[Old Man]
From:Morituri-|-Max
Subject:Re: what is faster than light?
Date:Mon, 24 Jan 2005 06:44:38 GMT
Timothy Law wrote:
> Hi, is there anything faster than light? Serious answers please.

Seriously, no.
From:Franz Heymann
Subject:Re: what is faster than light?
Date:Mon, 24 Jan 2005 08:56:57 +0000 (UTC)

"Morituri-|-Max" wrote in message
news:qP0Jd.58751$Ta2.1162@fe2.texas.rr.com...
> Timothy Law wrote:
> > Hi, is there anything faster than light? Serious answers please.
>
> Seriously, no.

More seriously, Yes.
The phase velocity of a wave in a waveguide exceeds that of light.
There are also certain wavelength ranges in which X rays have a phase
velocity larger than c. This shows up as instances in whichthe
refractive index is less than 1.

Franz
From:The Ghost In The Machine
Subject:Re: what is faster than light?
Date:Mon, 24 Jan 2005 04:00:14 GMT
In sci.physics, Timothy Law

wrote
on Mon, 24 Jan 2005 02:16:29 GMT
<1UYId.8659$rp1.7277@newsread3.news.atl.earthlink.net>:
> Hi, is there anything faster than light? Serious answers please.
> Thank you.
>

Tachyons, perhaps. We've not seen one yet, AFAIK.

--
#191, ewill3@earthlink.net
It's still legal to go .sigless.
From:Martin Hogbin
Subject:Re: what is faster than light?
Date:Mon, 24 Jan 2005 09:21:10 +0000 (UTC)

"Timothy Law" wrote in message
news:1UYId.8659$rp1.7277@newsread3.news.atl.earthlink.net...
> Hi, is there anything faster than light? Serious answers please.

There are plenty of things that go faster than light but none
of them involves either matter or information going faster
than light.

Have a look at the physics FAQ:
http://www.physics.adelaide.edu.au/~dkoks/Faq/Relativity/SpeedOfLight/FTL.html

Martin Hogbin
From:Greysky
Subject:Re: what is faster than light?
Date:Mon, 24 Jan 2005 07:23:35 GMT

"Timothy Law" wrote in message
news:1UYId.8659$rp1.7277@newsread3.news.atl.earthlink.net...
> Hi, is there anything faster than light? Serious answers please.
> Thank you.
>
>
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