> David McF. wrote:
> > I bump the laser so that the red dot travels from one side of the moon
> >to the other faster than the speed of light. But nothing travels faster than
> >light. How is this possible?
>
> At each successive moment that the laser moves, a different group of
> photons is coming out of the laser. Each photon is going the speed of
> light, but from a different angle. It isn't like there is this group of
> photons moving across the moon faster than the speed of light. -David
David McF might say something else, but I wonder, "Does the dot have
Identity?"
-Prof. Tim