What is a photon exactly?

What is the speed of a photon with respect to another photon moving in same dirn.?

  • if ur ans is ''c'' then plz explain what is going to change in observational frame(which is of photon moving with 'c'). Is it time which changes or something ...show more

  • Answer:

    it wil remain c cos speed of light is same in very inertial reference frame.........the thing that's gonna change is that u can't c things around u becos u r movin at d speed of light and so light can never reach ur eyes after reflecting from an object.....its like trying to catch a person equally fast as u.........so the distance between u remains some.......................and regarding time......it wil actually come to a stop....u wil be freezed in space-time.

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From OUTSIDE 0. From INSIDE c. How is that possible ? That is where TIME - SPACE Dilation comes in. 0 distance in 0 time. Velocity = distance/time If no time is passing, then you wait forever to measure a distance. As soon as you slow down and time passes, the distance you measure divided by the measured time will result in a velocity of c.

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