No no
...no offence taken I thought you missed my point on the basis I was unaware of refractive index and I can see why with the introduction
.
You can not offend me I am all most folk critise me for and more
... I accept personal responsibility for the slack way and the simplified way I post.
I read about it some time ago when I was looking at the Bose condensate stuff (and that certainly relates to the areas you suggest) but when I saw it this time given the chat on similar matters I thought I would post... I dont think folk think of light as having any speed but C and that C was selected for constant... but it is not.
alex
