I guess I didn't state my question that well. The point I am making is that because I am part of all these moving bodies (planet, solar system, galaxy) my speed is in constant flux. Since my personal view of time is directly related to the closer I am to the speed of light, does that mean that my personal time is constantly fluctuating? I guess the mor eI think about it the more I realize my actual question is whether a body can be at a zero speed? To truly not move in any direction of the 3 dimensions.
Quote:
Originally Posted by grant hutchison
You'll find that if you measure the speed of light, you'll always get the same value of 3x108 m.s-1. It doesn't matter what your state of motion relative to some other object, the speed of light is always the same for you. And likewise for anyone moving along with those other objects: they will also measure the speed of light, relative to their laboratory, as 3x108 m.s-1.
This can be demonstrated experimentally by, for instance, measuring the speed of light in the same laboratory at six-month intervals, so that the direction of motion of the Earth in its orbit around the sun has reversed during the intervening time. There's no difference in the measured speed of light.
The counterintuitive constancy of the speed of light is one of the observations on which the theory of relativity is founded.
Grant Hutchison
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