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Groups > sci.physics.relativity > #403395

Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass?

From moroney@world.std.spaamtrap.com (Michael Moroney)
Newsgroups sci.physics.relativity
Subject Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass?
Date 2016-12-29 22:31 +0000
Organization The World : www.TheWorld.com : Since 1989
Message-ID <o442ss$gil$3@pcls7.std.com> (permalink)
References (6 earlier) <f4eeb3a6-27e6-4129-b54a-f4d7f9dbe72c@googlegroups.com> <o3u466$mqc$2@gioia.aioe.org> <slrno67lml.v7s.nedlatham@woden.valhalla.oz> <yumdnbTTwsI3zvnFnZ2dnUU7_8xh4p2d@giganews.com> <slrno6aglk.62f.nedlatham@woden.valhalla.oz>

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Ned Latham <nedlatham@woden.valhalla.oz> writes:

>Tom Roberts wrote:

>> Any user of optical fibers (made of glass) who cares about
>> the propagation time must account for light moving slower
>> in glass (than in vacuum).

>Use your whatever it is that passes for a brain: unless you can
>hold a fibre absolutely straight, and align your light emitter
>exactly on the centre of the fibre and so that it emits light
>exactly in the direction of the length of fibre, the light
>it emits into the fibre will encounter the sides of the fibre
>an unknown number of times. IOW, the light will undergo an
>unknown mumber of Total Internal Reflections.

>Now do feel free to justify for us all how you can regard the
>extra time takem up by an unknown number of TIRs as so
>insignificant that you can conclude that the time taken for
>the light's traversal of the length of the fibre indicates the
>speed of its movement within the fibre.

In an earlier job, we had this enormous roll of fibre optic cable used
for testing how propagation delay of fibre channel signals affected
certain systems under test.  The fibre never left the spool, so it was
curved more than a fibre that was actually installed so in theory would
have more reflections than a straighter run.  So why was the delay time 
the same as what the manufacturer said it would be for an installed run?

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Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-18 21:24 -0800
  Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-18 21:51 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-12-19 09:27 -0600
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-19 08:02 -0800
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-12-19 11:54 -0600
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? alsor@interia.pl - 2016-12-19 12:06 -0800
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 03:49 +0000
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-19 20:06 -0800
          Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 04:12 +0000
          Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-12-20 06:35 +0000
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2016-12-20 07:23 -0600
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-20 07:23 -0800
          Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2016-12-20 11:35 -0600
            Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-21 06:33 -0800
              Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-21 06:50 -0800
              Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Dono," <sa_ge@comcast.net> - 2016-12-21 07:42 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Poutnik <poutnik4nntp@gmail.com> - 2016-12-21 16:58 +0100
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Poutnik <poutnik4nntp@gmail.com> - 2016-12-21 17:05 +0100
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-21 08:51 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-21 08:57 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Dono," <sa_ge@comcast.net> - 2016-12-21 09:04 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-22 08:33 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Dono," <sa_ge@comcast.net> - 2016-12-22 08:44 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-23 06:27 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Darleen Sloop <aolenD@nedfdealln.org> - 2016-12-23 14:34 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-23 06:46 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Dono," <sa_ge@comcast.net> - 2016-12-23 07:31 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Dono," <sa_ge@comcast.net> - 2016-12-23 07:57 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-24 05:26 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Dono," <sa_ge@comcast.net> - 2016-12-24 08:15 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2016-12-22 10:50 -0600
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Dono," <sa_ge@comcast.net> - 2016-12-22 08:58 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-22 19:57 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2016-12-23 08:10 -0600
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-23 14:50 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2016-12-27 09:13 -0600
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-28 15:07 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-12-23 16:50 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-23 18:13 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-12-23 19:19 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-23 21:11 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-23 06:40 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2016-12-23 08:45 -0600
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Darleen Sloop <aolenD@nedfdealln.org> - 2016-12-23 14:49 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-24 06:56 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2016-12-27 10:13 -0600
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-29 13:50 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2017-01-03 14:04 -0600
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Tom Roberts <tjroberts137@sbcglobal.net> - 2017-01-03 16:23 -0600
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-04 02:43 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2017-01-04 03:35 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-04 15:56 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2017-01-04 08:38 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-05 04:14 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2017-01-04 06:44 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2017-01-04 14:24 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-01-04 14:43 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-05 03:19 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2017-01-04 10:04 -0600
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Darleen Sloop <aolenD@nedfdealln.org> - 2016-12-23 14:45 +0000
              Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2016-12-27 10:17 -0600
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-28 15:14 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-12-28 18:07 -0600
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-28 16:11 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-29 17:07 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-29 10:20 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 12:19 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2016-12-30 13:48 +0100
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 13:06 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-30 05:21 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Paul B. Andersen" <relativity@paulba.no> - 2016-12-31 15:43 +0100
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-31 22:07 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? pnalsing@gmail.com - 2016-12-31 14:58 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-01 00:52 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? pnalsing@gmail.com - 2016-12-31 22:59 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2017-01-01 01:42 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-01 11:34 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-01-01 07:33 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-01 11:39 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-01-01 18:39 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-01 21:36 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-01-01 22:41 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-02 09:24 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-01-03 05:14 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-03 08:08 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-01-03 16:08 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-03 19:13 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-01-05 05:19 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-05 15:28 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-07 14:44 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-07 14:57 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-08 09:57 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-07 15:07 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-01-08 04:53 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-08 09:41 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2017-01-02 02:39 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-02 14:20 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass?   < @ . > - 2017-01-02 21:53 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? & <ampersand.the.great@gmail.com> - 2017-01-02 17:09 -0500
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-03 01:57 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? paparios <paparios@gmail.com> - 2017-01-02 08:46 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Paul B. Andersen" <relativity@paulba.no> - 2017-01-01 11:49 +0100
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-01 11:49 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? pnalsing@gmail.com - 2017-01-01 08:55 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-01 21:23 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Paul B. Andersen" <relativity@paulba.no> - 2016-12-29 20:31 +0100
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2016-12-29 21:35 +0100
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-29 13:32 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-29 13:39 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 13:25 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 14:14 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-30 06:25 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 16:39 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-30 09:21 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? paparios <paparios@gmail.com> - 2016-12-30 11:42 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-31 03:48 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? paparios <paparios@gmail.com> - 2016-12-31 05:14 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-31 21:47 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-30 13:11 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-31 03:57 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-31 04:00 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-31 21:41 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-31 14:36 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-01 00:43 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-31 17:02 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-01 06:41 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-12-29 22:31 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 13:02 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-30 04:38 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 13:12 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-30 05:29 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 14:25 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-30 06:48 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 16:43 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-30 09:10 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-30 05:55 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 14:36 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-30 09:21 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-30 17:58 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-30 11:35 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-31 03:42 +0000
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-29 13:51 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Odd Bodkin <bodkinodd@gmail.com> - 2017-01-03 14:04 -0600
              Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-29 15:48 -0800
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? JanPB <filmart@gmail.com> - 2016-12-24 11:56 -0800
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-24 13:09 -0800
          Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-12-25 05:29 +0000
            Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Julio Di Egidio <julio@diegidio.name> - 2016-12-24 22:24 -0800
              Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-25 08:43 -0800
          Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Julio Di Egidio <julio@diegidio.name> - 2016-12-24 22:35 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Dono," <sa_ge@comcast.net> - 2016-12-19 08:19 -0800
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 04:18 +0000
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-12-20 09:22 -0600
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-20 07:44 -0800
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-20 07:55 -0800
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 17:29 +0000
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Poutnik <poutnik4nntp@gmail.com> - 2016-12-20 08:31 +0100
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 07:36 +0000
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Poutnik <poutnik4nntp@gmail.com> - 2016-12-20 08:46 +0100
          Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 08:26 +0000
            Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Poutnik <poutnik4nntp@gmail.com> - 2016-12-20 10:38 +0100
              Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 10:03 +0000
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-20 08:01 -0800
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Dono," <sa_ge@comcast.net> - 2016-12-20 08:34 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? numbernumber1964@gmail.com - 2016-12-19 10:38 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? numbernumber1964@gmail.com - 2016-12-19 12:47 -0800
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2016-12-19 14:20 -0800
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 03:54 +0000
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 05:28 +0000
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "Anon Y. Mouse" <nobody@home.invalid> - 2016-12-20 01:54 -0500
          Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 07:27 +0000
          Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "hanson" <hanson@quick.net> - 2016-12-19 23:31 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? numbernumber1964@gmail.com - 2016-12-19 14:42 -0800
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2016-12-19 16:20 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? numbernumber1964@gmail.com - 2016-12-19 16:23 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? numbernumber1964@gmail.com - 2016-12-19 16:24 -0800
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2016-12-19 18:25 -0800
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 03:53 +0000
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-20 01:07 -0800
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2016-12-20 04:24 -0800
          Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-20 06:21 -0800
            Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2016-12-20 09:55 -0800
              Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-20 10:32 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2016-12-20 11:32 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-20 12:04 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2016-12-20 16:28 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-20 23:10 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2016-12-21 03:11 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-21 03:22 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2016-12-21 03:50 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-21 03:56 -0800
                Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Gary Harnagel <hitlong@yahoo.com> - 2016-12-21 04:57 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-12-20 03:48 +0000
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Mitzi Gilliard <iotoor@iGMaMiai.org> - 2016-12-20 03:58 +0000
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? mlwozniak@wp.pl - 2016-12-20 01:09 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? "David (Lord Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2016-12-20 03:17 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? numbernumber1964@gmail.com - 2016-12-20 10:02 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? numbernumber1964@gmail.com - 2016-12-20 10:30 -0800
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-21 06:06 -0800
  Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? eckard.blumschein@arcor.de - 2016-12-31 00:16 -0800
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-31 11:01 +0000
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-31 05:24 -0800
        Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2016-12-31 20:59 +0000
          Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-31 13:25 -0800
            Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Ned Latham <nedlatham@woden.valhalla.oz> - 2017-01-01 00:40 +0000
      Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-12-31 05:28 -0800
    Re: Why is the speed of light slower in glass and regains its normal speeds as it exits from glass? kenseto <setoken@att.net> - 2016-12-31 07:09 -0800

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