(adsbygoogle = window.adsbygoogle || []).push({}); "Absolute" light speed or velocity or both?

Consider an inverse of Einstein's light clock. On a cartesian plane in a vacuum, a beam of light emanates from the origin at 45 degrees with velocity c. Is it OK that the x and y component velocities are each less than c (i.e. c divided by sqrt 2) or must time adjust to make component velocities also c?

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# Absolute light speed or velocity or both?

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