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Re: Gravity needs NO Matter

Followups directed to: sci.physics.relativity

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Y.Porat wrote:

> i will do it again for you
> i snipped the other text because it is only obfuscation the main  point i
> bring here you see while you see the forest you don t see the trees there
> so

It is *you* who is missing the point multiple times here, as you can see 
below.

> E photon  Energy  is
> E = h f
> right??

Yes (AISB).
 
> do you know the dimensions of h
> if not i will do it for you
>  h has the dimensions
> 
>  ~6.6 expo -24 times   Kilogram Meter^2/second
> 
> Kilogram is here the dimension of mass  MASS (MASS) !!!! it and  cant be
> something else

1. It can be something else, see 
   <https://en.wikipedia.org/wiki/Planck_constant>

2. That there is a “kg” in it does not mean that “ℎ has the kilogram
   dimension” as you claimed.  The kilogram is a unit, not a dimension.

> all together is  an equation of energy right ??

If by “all together” you mean E = ℎ f, then yes.  And so the dimensions in 
that are:

  energy × time × frequency = energy × time × 1∕time = energy.
 
> so where do you see  there anything
> to multiply that formula including  the mass dimension there
> by anything relativistic ????
> or zero ???
>    old copyright by
> TIA

For the last time, in statements so short and simple that hopefully even you 
can understand them (use a fixed-width Unicode font for display):

1. The equation for relativistic momentum that has v for velocity in it
   only applies to objects whose mass is not equal to zero.

2. The equation for relativistic kinetic energy that has v for velocity
   in it only applies to objects whose mass is not equal to zero.

3. The mass of a photon is (assumed to be) zero.  Thus, 

   a) the equation for relativistic momentum that has v for velocity in
      it *does not apply to photons*;

   b) the equation for relativistic kinetic energy that has v for velocity 
      in it *does not apply to photons*;

   c) it is *irrelevant to the motion of photons* that neither equation has 
      a solution for v = c;
      
   d) it is not irrelevant to the motion of objects *other than photons*
      that neither equation has a solution for v = c, because both equations
      are *for objects with non-zero mass*.

      d1) lim p(m, v) = +∞
          v→c

          lim E(m, v) = +∞  ⇒  lim E_k(m, v) = +∞
          v→c                  v→c

      d2) Thus, objects with non-zero mass cannot travel at (a relative 
          speed of) c.  One would need infinite energy for acceleration.

4. The energy–momentum relation from special relativity,

     E(m, p) = √((m c²)² + (p c)²),

   applies to all objects.  You must replace m with the mass of the object
   and p with the *specific* expression to calculate (the magnitude of)
   its (relativistic) momentum.

5. For photons, m = 0 and p = ℎ f∕c; the latter follows from Planck’s wave
   equations.  As a result,

     E(m = 0, p = ℎ f∕c) = ℎ f.

   There is no contradiction between Planck’s and Einstein’s equations;
   on the contrary.

6. This discussion is about relativity.  You are supposed to post about
   this to sci.physics.relativity, not to sci.physics.

   Get yourself a newsreader that supports the Followup-To header field.
   Do not post using Google Groups, it is broken.

   <http://twovoyagers.com/improve-usenet.org/>

HTH.


F'up2 sci.physics.relativity

PointedEars
-- 
Q: What happens when electrons lose their energy?  
A: They get Bohr'ed.

(from: WolframAlpha)

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Thread

Re: Gravity needs NO Matter "Y.Porat" <y.y.porat@gmail.com> - 2016-02-05 00:14 -0800
  Re: Gravity needs NO Matter Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-05 22:38 +0100
    Re: Gravity needs NO Matter "Y.Porat" <y.y.porat@gmail.com> - 2016-02-06 06:34 -0800
      Re: Gravity needs NO Matter HVAC <mr.hvac@gmail.com> - 2016-02-06 08:01 -0800
        Re: Gravity needs NO Matter Mahipal <mahipal7638@gmail.com> - 2016-02-06 08:42 -0800
          Re: Gravity needs NO Matter "Y.Porat" <y.y.porat@gmail.com> - 2016-02-06 10:11 -0800
            Re: Gravity needs NO Matter Mahipal <mahipal7638@gmail.com> - 2016-02-06 10:22 -0800
          Re: Gravity needs NO Matter "Y.Porat" <y.y.porat@gmail.com> - 2016-02-08 10:39 -0800
            Re: Gravity needs NO Matter Mahipal <mahipal7638@gmail.com> - 2016-02-08 11:06 -0800
              Re: Gravity needs NO Matter "Y.Porat" <y.y.porat@gmail.com> - 2016-02-08 22:32 -0800
              editen sujet noTthaTguY <abu.kuanysh05@gmail.com> - 2016-02-09 10:14 -0800
        Re: Gravity needs NO Matter "Y.Porat" <y.y.porat@gmail.com> - 2016-02-06 10:00 -0800
      Re: Gravity needs NO Matter Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-06 17:22 +0100
        Re: Gravity needs NO Matter john <johnsefton288@gmail.com> - 2016-02-06 08:41 -0800
          Re: Gravity needs NO Matter Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-06 18:08 +0100
            Re: Gravity needs NO Matter john <johnsefton288@gmail.com> - 2016-02-06 09:17 -0800
              Re: Gravity needs NO Matter Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-06 18:25 +0100
                Re: Gravity needs NO Matter john <johnsefton288@gmail.com> - 2016-02-06 09:27 -0800
                Re: Gravity needs NO Matter "Y.Porat" <y.y.porat@gmail.com> - 2016-02-09 10:45 -0800
                Re: Gravity needs NO Matter Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-09 23:31 +0100
        Re: Gravity needs NO Matter "Y.Porat" <y.y.porat@gmail.com> - 2016-02-09 10:41 -0800
          Re: Gravity needs NO Matter Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-09 23:04 +0100
            Re: Gravity needs NO Matter "Y.Porat" <y.y.porat@gmail.com> - 2016-02-09 22:37 -0800
              Re: Gravity needs NO Matter Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-10 20:33 +0100
                Re: Gravity needs NO Matter Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-10 20:44 +0100
                Re: Gravity needs NO Matter "Y.Porat" <y.y.porat@gmail.com> - 2016-02-10 22:57 -0800
                Re: Gravity needs NO Matter Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-13 19:41 +0100

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