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Re: Speed of light

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kenseto wrote:

> On Tuesday, April 11, 2017 at 2:49:45 PM UTC-4, Thomas 'PointedEars' Lahn
> wrote:

Attribution *line*, _not_ attribution novel.

>> The speed of light in vacuum is c₀ = 299'792'458 m∕s.
> 
> This is an artificially

This is gibberish.  But if you mean “this is artificially”, then no, it is 
not: It is the result of increasingly precise attempts at measurement.

> The fields of QFT  defined speed and it is based on the circular
> definition for the meter that a meter is 1/299,792,458 light-second.

Such a nonsense, it is not even wrong.

Instead:

By 1983, measurements of the speed of light in vacuum had become so precise 
that, whereas in the International System of Units (SI) previously the speed 
of light in vacuum had been based on the meter, with the meter defined based 
on the wavelength of a specific emission line, it is now the other way 
around: the meter is defined as 1∕299'792'458 of the distance that light 
travels in vacuum in 1 second.

<https://en.wikipedia.org/wiki/Speed_of_light>
<https://en.wikipedia.org/wiki/Metre#Wavelength_definition>
 
>> You can either say that the vacuum is the medium through which (_not_: by
>> which) light is transmitted, or as vacuum is defined as “space void of
>> matter” (QFTs notwithstanding), that there is no medium.  It is usually
>> generally stated that the transmission of light, and electromagnetic
>> radiation in general, does not require a medium.
> 
> The fields QFT do not exist without a medium.

Not even wrong.

> Weinberg said that the fields in QFT are stress and stains in a medium.

Most likely he did not.  But you may cite evidence.

-- 
PointedEars

Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.

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Science School The Starmaker <starmaker@ix.netcom.com> - 2017-04-09 13:03 -0700
  Re: Science School The Starmaker <starmaker@ix.netcom.com> - 2017-04-09 13:33 -0700
  Re: Science School Robert Bannister <robban@clubtelco.com> - 2017-04-11 10:10 +0800
    Re: Science School Paul Colquhoun <newsposter@andor.dropbear.id.au> - 2017-04-11 17:39 +1000
    Re: Science School Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-04-11 15:06 +0200
      Re: Science School Jolie Osokuro <uuol@oowo.ou> - 2017-04-11 13:32 +0000
        Re: Science School Poutnik <poutnik4nntp@gmail.com> - 2017-04-11 15:48 +0200
      Re: Science School kenseto <setoken@att.net> - 2017-04-11 08:25 -0700
        Re: Science School Dirk Van de moortel <dirkvandemoortel@hotspam.not> - 2017-04-11 18:16 +0200
          Re: Science School Wendi Maddox <ox@awdodww.oe> - 2017-04-14 14:40 +0000
        Speed of light (was: Science School) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-04-11 18:21 +0200
          Re: Speed of light (was: Science School) kenseto <setoken@att.net> - 2017-04-11 11:25 -0700
            Re: Speed of light (was: Science School) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-04-11 20:49 +0200
              Re: Speed of light (was: Science School) mlwozniak@wp.pl - 2017-04-11 12:17 -0700
                Re: Speed of light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-04-11 22:00 +0200
              Re: Speed of light (was: Science School) kenseto <setoken@att.net> - 2017-04-12 06:34 -0700
                Re: Speed of light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-04-13 00:36 +0200
                Re: Speed of light mlwozniak@wp.pl - 2017-04-13 05:29 -0700
                Re: Speed of light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-04-13 14:41 +0200
                Re: Speed of light mlwozniak@wp.pl - 2017-04-13 06:07 -0700
                Re: Speed of light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-04-13 15:20 +0200
                Re: Speed of light mlwozniak@wp.pl - 2017-04-13 06:25 -0700
                Re: Speed of light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-04-13 15:43 +0200
                Re: Speed of light mlwozniak@wp.pl - 2017-04-13 06:53 -0700
                Re: Speed of light kenseto <setoken@att.net> - 2017-04-13 05:47 -0700
                Re: Speed of light Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-04-13 15:15 +0200
                Re: Speed of light moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-13 16:54 +0000
                Re: Speed of light kenseto <setoken@att.net> - 2017-04-13 10:44 -0700
                Re: Speed of light moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-13 21:33 +0000
            Re: Speed of light (was: Science School) moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-11 20:22 +0000
              Re: Speed of light (was: Science School) kenseto <setoken@att.net> - 2017-04-12 07:16 -0700
                Re: Speed of light (was: Science School) moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-12 15:49 +0000
                Re: Speed of light (was: Science School) mlwozniak@wp.pl - 2017-04-12 10:04 -0700
                Re: Speed of light (was: Science School) kenseto <setoken@att.net> - 2017-04-13 05:22 -0700
                Re: Speed of light (was: Science School) moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-13 16:33 +0000
  Re: Science School Nobody <nobody@nowhere.nohow> - 2017-04-11 00:41 -0400

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