|MadSci Network: Physics|
1. Since a radiation changes its speed in different materials, either the wave length or the frequency (or both) have to change too. Which of them - if any - stays unchanged, being in this sense a "more fundamental" characteristik of the radiation than the other? 2. If a radiation travels with light speed (or almost with that) and the particle - photon, f.e. - "makes" waves, does the particle move in effect faster than the radiation itself, or is the concept of "wave" only a vehicel of understanding and not a "real" wave in the sense the particel has to travel along?
Re: Is the fundamental characteristic of waves the wave length or frequency
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