How to apply e=mc^2 to a photon?

[anantchowdhary]

ohk i get ur second point but not the first.Could you please elaborate

 

[Jimmini]

ohk i get ur second point but not the first.Could you please elaborate

Einstein once said, "for every action, there is an opposite and equal reaction".
If you take Fermats' work and apply time/distance to the concept, that's what it equals.
It could be that what fermat meant by path of least time is less energy expended. For light to change direction would require a greater energy expenditure.
But to follow its' path, it will be conserving energy.
Hope this helps.

 

[cristo]

Einstein once said, "for every action, there is an opposite and equal reaction".

Whilst Einstein may have said it, this is Newton's third law!

 

[Jimmini]

Whilst Einstein may have said it, this is Newton's third law!

I like Einstein better :).