- #1

RiddlerA

- 58

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**Speed of light becomes Infinity and Zero!**

Hi Guys, I am just new to SR & GR. I learned about Lorentz contraction and time dilation, but they don't make sense when i consider the following situation...

Your(Moving non inertial frame) Time runs slow relative to a stationary observer when your speed increases and it will become infinity(as t = t

_{0}/√(1-v

^{2}/c

^{2})) if speed v equals 'c' right?

Since photons travel at speed c, their time relative to our world or the whole universe must be infinity.. Since it takes infinite time to move relative to us, we can safely assume that the photon doesn't move at all(relative to our frame).. i.e. speed of light = 0

Now consider Lorentz contraction... L = L

_{0}√(1-v

^{2}/c

^{2}))

This means that as the object's speed increases, its length decreases(in the direction of motion)... So if the object's speed equals 'c' ,then its lenth would be 0 (in the direction of motion)... But we know there is no absolute frame(since einstein forbade the ether )

So we can say that photon travels at c relative to universe, but if we consider universe moves at c relative to photon, then the length of universe would be 0 and hence photon can traverse the whole universe in no time.. which means Speed of light = Infinity

I know I am wrong but i don't know where i went wrong.. The above anomalies are the conclusions I am arriving at whenever i think of relativity... Please someone clear that for me...

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