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U said photons r massless ,move with the speed of light(c)but it does not suit the eqm=m0c/sqrt(c2-v2).please explain. and by E=pc ,for p=0 as mass of photon is 0, how can it have the energy to move at the speed of light? thanx
The equation m=m0
) is not generally valid. It breaks down when m0
=0 and v=c. The more general form is
, or (mc)2
. These latter forms work fine for massless (m0
=0) particles, giving E=pc.
(published on 10/06/09)
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