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Re: 'Dark Matter'

From Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups sci.physics
Subject Re: 'Dark Matter'
Date 2015-08-13 19:39 +0200
Organization PointedEars Software (PES)
Message-ID <2922604.k8bpgQcGR2@PointedEars.de> (permalink)
References (9 earlier) <mqb52r$aen$1@pcls7.std.com> <e62cd57c-52e4-45ca-aae6-217b85315b7e@googlegroups.com> <mqbc84$bvc$4@pcls7.std.com> <14720553.f2yFH58ENp@PointedEars.de> <mqiaf6$p12$1@pcls7.std.com>

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Michael Moroney wrote:

> Thomas 'PointedEars' Lahn <PointedEars@web.de> writes:
>> Michael Moroney wrote:
>>> There are two events.  The sun emits a photon and recoils (actually the
>>> emitting plasma particle recoils as the sun is not solid, as was pointed
>>> out)
>> A "recoiling emitting plasma particle", what crankish nonsense.  Read on
>> the plasma state of matter, and stellar nucleosynthesis, before further
>> comments, will you?
> 
> Pointed Ears, the momentum of a photon is p = hf/c.
         ^
Without the space.  Yes, it is.

> Momentum is always conserved.

Yes.  AISB.

> Therefore, *something* *must* recoil with momentum p = -hf/c.

No.  I think we have finally determined the underlying, oversimplying 
fallacy of (the two of) you.  Your disregard of the *direction* of momentum 
(it is a *vector* quantity) aside:

  E = E_kin = p c

and

  p = ℎ f∕c

are *only* true for particles with mass m = 0, as assumed for photons, 
because of

  E_kin = √((m c²)² + (p c)²) − m c²

(the kinetic energy gained by a body is the difference between the energy it 
has in relative motion and the energy it has at relative rest), and

  E² = p² c² + m² c⁴

which *only for m = 0* leads to

   p = E∕c

and for photons with

   E = ℎ f

to

   p = ℎ f∕c.

But the Sun does not consist only of photons.  In fact, it consists of more 
stuff that does not manifest itself as a photon than vice-versa.  Stuff 
whose mass is not zero.  Stuff that does not emit those photons in the first 
place.


PointedEars
-- 
“Science is empirical: knowing the answer means nothing;
 testing your knowledge means everything.”
   —Dr. Lawrence M. Krauss, theoretical physicist,
    in “A Universe from Nothing” (2009)

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'Dark Matter' john <johnsefton288@gmail.com> - 2015-07-27 07:28 -0700
  'Dark Matter' john <johnsefton288@gmail.com> - 2015-07-27 18:16 -0700
    Re: 'Dark Matter' HVAC <Mr.HVAC@gmail.com> - 2015-07-28 07:17 -0400
    Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-07-28 15:18 -0700
      Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-07-29 02:22 +0000
    Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-10 21:18 +0200
      Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-10 13:51 -0700
        Re: 'Dark Matter' Odd Bodkin <bodkinodd@gmail.com> - 2015-08-10 15:58 -0500
          Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-11 01:04 +0200
            Re: 'Dark Matter' Odd Bodkin <bodkinodd@gmail.com> - 2015-08-11 07:49 -0500
              Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-11 06:26 -0700
                Re: 'Dark Matter' Sam Wormley <swormley1@gmail.com> - 2015-08-11 08:31 -0500
                Re: 'Dark Matter' HVAC <Mr.HVAC@gmail.com> - 2015-08-11 09:41 -0400
                Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-11 06:51 -0700
                Re: 'Dark Matter' HVAC <Mr.HVAC@gmail.com> - 2015-08-11 13:44 -0400
                Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-11 11:00 -0700
                Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-08-11 18:44 +0000
                Re: 'Dark Matter' Sam Wormley <swormley1@gmail.com> - 2015-08-11 08:51 -0500
                Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-11 07:17 -0700
                Re: 'Dark Matter' Sam Wormley <swormley1@gmail.com> - 2015-08-11 10:45 -0500
                Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-11 09:50 -0700
                Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-11 10:01 -0700
                Re: 'Dark Matter' Mahipal <mahipal7638@gmail.com> - 2015-08-11 08:10 -0700
              Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-13 13:44 +0200
                Re: 'Dark Matter' Odd Bodkin <bodkinodd@gmail.com> - 2015-08-13 07:51 -0500
      Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-08-10 21:28 +0000
        Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-10 14:35 -0700
          Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-08-10 23:31 +0000
            Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-13 15:22 +0200
              Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-08-13 14:43 +0000
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-13 19:39 +0200
                Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-08-13 18:06 +0000
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-13 20:23 +0200
                Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-08-13 19:37 +0000
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 00:39 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 15:38 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 16:25 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 17:15 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 17:31 +0200
                Re: 'Dark Matter' R Kym Horsell <kym@kymhorsell.com> - 2015-08-16 16:09 +0000
                Re: 'Dark Matter' [OT] Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 18:47 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 10:38 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 11:09 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 12:40 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 16:17 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 16:46 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 10:42 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 11:21 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 12:58 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 16:19 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 16:49 +0200
                light is magneto-electrical noTthaTguY <abu.kuanysh05@gmail.com> - 2015-08-13 19:10 -0700
                Re: 'Dark Matter' Odd Bodkin <bodkinodd@gmail.com> - 2015-08-13 13:49 -0500
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-13 20:50 +0200
                Re: 'Dark Matter' Odd Bodkin <bodkinodd@gmail.com> - 2015-08-13 14:03 -0500
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 00:43 +0200
                Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-15 17:53 -0700
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 09:34 +0200
                Re: 'Dark Matter' HVAC <Mr.HVAC@gmail.com> - 2015-08-16 08:05 -0400
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 11:36 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 16:00 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 16:22 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 16:30 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 16:56 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 11:17 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 11:26 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 13:01 +0200
              Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 10:14 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 10:43 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 13:07 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 16:21 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 17:07 +0200
        Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-11 01:03 +0200
          Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-08-10 23:40 +0000
            Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-13 13:41 +0200
              Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-08-13 14:54 +0000
                Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-13 08:13 -0700
                Re: 'Dark Matter' Odd Bodkin <bodkinodd@gmail.com> - 2015-08-13 10:46 -0500
                Re: 'Dark Matter' noTthaTguY <abu.kuanysh05@gmail.com> - 2015-08-13 09:48 -0700
                Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-13 10:00 -0700
                Re: 'Dark Matter' Odd Bodkin <bodkinodd@gmail.com> - 2015-08-13 13:45 -0500
                Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-08-13 16:01 +0000
                Re: 'Dark Matter' HVAC <Mr.HVAC@gmail.com> - 2015-08-14 07:07 -0400
                Re: 'Dark Matter' noTthaTguY <abu.kuanysh05@gmail.com> - 2015-08-14 10:39 -0700
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-13 20:29 +0200
                Re: 'Dark Matter' moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-08-13 19:14 +0000
                Re: 'Dark Matter' Felipe Delgado <fd@spreadspectrum.org> - 2015-08-13 19:28 +0000
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-15 15:38 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 12:23 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 16:04 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 16:32 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 16:33 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 17:02 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 19:24 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 20:31 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 22:16 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 22:38 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 20:45 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 22:32 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 22:57 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 23:22 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 23:34 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 23:38 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-18 07:43 +0200
                Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-18 08:07 -0700
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 21:40 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 22:35 +0200
                Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-16 23:36 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-16 23:50 +0200
                Re: 'Dark Matter' Poutnik <poutnik4nntp@gmail.com> - 2015-08-17 07:56 +0200
          Re: 'Dark Matter' Odd Bodkin <bodkinodd@gmail.com> - 2015-08-11 07:48 -0500
            Re: 'Dark Matter' Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-13 13:41 +0200
  Re: 'Dark Matter' "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-07-29 13:27 -0700
  Re: 'Dark Matter' "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-08-16 14:42 -0700
  Re: 'Dark Matter' "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-08-18 14:01 -0700
    Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-18 20:21 -0700
    Re: 'Dark Matter' benj <nobody@gmail.com> - 2015-08-19 01:26 -0400
      Re: 'Dark Matter' HVAC <Mr.HVAC@gmail.com> - 2015-08-19 06:07 -0400
        Re: 'Dark Matter' Sam Wormley <swormley1@gmail.com> - 2015-08-19 08:05 -0500
        Re: 'Dark Matter' john <johnsefton288@gmail.com> - 2015-08-19 07:04 -0700
          Re: 'Dark Matter' HVAC <Mr.HVAC@gmail.com> - 2015-08-19 19:14 -0400
  Re: 'Dark Matter' "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-08-19 09:12 -0700

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