Thanks Nugatory and Bill_K, it's back to the books for me. I guess I have been too pre-occupied looking for an experiment that basically duplicated a light clock. I see now there are other angles from which I might consider the answer to my question.
I have an easy question but nonetheless I have not been able to find the answer: within the context of special relativity, in particular with light clocks, where the two opposite mirrors of a hypothetical light clock are traveling along very fast, they nonetheless do not leave the emitted...