C is infinite and finite at the same time??

What do you call something that has no upper limit?





Im referring to the observation that measuring the speed of the same photon from different perspectives yeilds the same speed.





If you and I are stationary to each other, and measure the speed of light, we get the same number. If I am moving past you at a high rate of speed, we still measure the same speed from the same photon of light as before. However, since I am moving, and the speed of light were observing is still the exact same number as when Im stationary, could I not say that no matter what speed I go flying past you, I will never get up to c?





Another way to look at it would be to say that no matter what speed I go, I seem stationary to light. (I probably could have just said that first lol)





So couldnt you say, from my perspective, that the speed of light is infinite?





If thats true,


t(sqrt)(1-(v^2/c^2))


could instead be


t(sqrt)(1-(v^2/infinity^2))

C is infinite and finite at the same time??
I think your point is that the speed of light seems to have a property of being infinite. The reason that it does not is dilation. Part of our perceived speed of light comes from our level of dilation. It is not as simple as comparing to scalar numbers.
Reply:Here fails your logic.





Your statement below is not correct.





'Another way to look at it would be to say that no matter what speed I go, I seem stationary to light.





There is no relative speed for light. It is constant for all observers moving with different relative speeds.





Therefore the question, "What will be the relative speed of others with respect to light?" cannot be answered because there is no relation between the speed of others and the speed of light. Speed of light with respect to us independent of our speeds.





If and only if the speed of light changes with respect to our speed , one can find the relative speed of others with respect to light.
Reply:But we also know that electromagnetic radiation--light, radio waves, and the rest--doesn't travel instantaneously, even through a vacuum. That's why we have to deal with satellite delays when broadcasting via communications satellites.





In fact, your local police department uses the finite speed of light to check your automobile's speed. Radar and light pulses take some time to reflect from your car back to Smokey's camera, and he measures the change in that time-of-flight before he sets off after you.