Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
#2: When time has frozen, you will perceive the time you spend travelling at c is zero. Travelling at light speed is instant teleportation, you experience nothing of the ride.
Instead of calculating T at v=c, you should calculate the lim v->c for T. That will be infinity. But if you don't use the limit, division by zero is undefined.
