From: jl@glen--canyon.com   
      
   On 10 Feb 2026 21:58:30 GMT, ram@zedat.fu-berlin.de (Stefan Ram)   
   wrote:   
      
   >john larkin  wrote or quoted:   
   >>Two gamma rays (zero mass total) can collide to produce a particle   
   >>pair (which has mass.)   
   >   
   >  Let's call the momenta of the two photons p0 and p1.   
   >   
   >  We may assume p1 = -p0 as the two photons are moving towards   
   >  each other from opposite directions. Let's call the momentum   
   >  of the system of these two photons "p", then we have:   
   >   
   >p = p0 + p1 = p0 +( -p0 )= p0 - p0 = 0   
   >   
   >  . Let's call the energy of this pair "E" and its mass "m". From   
   >   
   >E^2 = m^2 + p^2   
   >   
   >  (in units with c=1) and   
   >   
   >p = 0   
   >   
   >  , we get,   
   >   
   >E^2 = m^2   
   >   
   >  for the pair. I.e., all its energy is mass. And this is the   
   >  mass the particle pair has after the collision.   
   >   
   >Newsgroups: sci.electronics.design,sci.physics   
   >Followup-To: sci.physics   
   >Subject changed.   
   >   
      
   The gamma rays had no gravitational effect on the rest of the mass in   
   the universe, up until the instant that they collided to form a   
   particle pair. Then a gravitational object magically appeared.   
      
   Does't that create a spherical, symmetric, expanding bubble of   
   gravity?   
      
   I'm just an engineer, but I think this is real. People say it's not   
   technically possible, or that the efffect is too small to worry about,   
   or some other excuse for not saying that it could happen.   
      
      
      
      
   John Larkin   
   Highland Tech Glen Canyon Design Center   
   Lunatic Fringe Electronics   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)