Jan Walzer <jan### [at] lzernet> wrote:
: you mean photons won't always fly straight, but be affected by
: the mass of objects ?

  In fact, photons do always "fly" straight.
  Of course the meaning of "straight" is actually "the shortest path between
two points in space". In a cartesian coordinate system this is what we usually
think as "a straight line". However, according to the theory, space is not
a cartesian coordinate system, but it's bent due to masses in it. In this kind
of curved space the real shortest path between two points may not look
straight from the point of view of a distant observer. However, from the
point of view of the photon, it always travels straight (ie. the photon
itself always goes ahead, without never turning to any other direction).
  I think that the shortest path between two points in a curved space is
called a geodetic line, or something like that.

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

Post a reply to this message