It would then follow that there must be some relation between the effect the fixed speed of light has on time, and that it may have on the other three spatial dimensions (height, width, and depth).
The best way to visualize this effect is with an anecdote proposed by Brian Greene. Tom, a race car driver, has just purchased a new car. He measures the length of the car in the show room, but for some reason would also like to know its length while in motion. For this task he enlists his friend George. Obviously George cannot simply hold a tape measure to the car whilst Tom is speeding around the track, so they opt to measure the length of the car a different way.
George will stand at the side of the track and measure the time from when the front bumper reaches him to when the back bumper passes him. Using the speed Tom reads from the spedometer, they will then have the speed of the car and the time it takes to pass George. By multiplying them, George should end up with the length of the car.
As has just been discussed, because they are moving relatively to one another, both Tom and George will observe that the other is experiencing the passing of time at a slower rate than himself. When Tom observes George's clock running more slowly than his own, he will conclude that George will measure a shorter amount of time, and therefore calculate a shorter length of the car! In fact, an observer will always note a shorter length of objects percieved to be travelling faster than themselves. The necessary speeds for this to be evident to the naked eye, forever, are on scales many times that of the fastest human creation to date. At 98 percent of the speed of light, an object will appear to have only 20 percent of its original length.