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Feb15-11, 05:08 PM
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Quote Quote by rahuld.exe View Post
[tex] m_{SR}=\frac{m_{0}}{\sqrt{1-\frac{v^{2}}{c^{2}}}} [/tex]
according to this formula... anything that travels with speed of light will have infinite mass...

but light also travels like a matter.... and so light(matter) obviously travels at the speed of light.... doesnt it imply that light(as a matter) has infinite mass?
It's better to think of and use only one formula which is valid for all <particles> from special relativity.

[tex] E^{2}=m_{0}c^{4}+p^{2}c^{2} [/tex]

With operators instead of scalar functions, this formula holds valid in quantum specially-relativistic theories as well. That's where the photons come from.