Hi Gary,
It is a nicely written essay, good on you!
Question for you.
I assume you have a constant velocity for light, and time varies in direction around a sphere. Would you get the same result if you kept time constant and had velocity of light around the sphere changing, i.e. the value ct would still be the same. I think the latter is correct as I take 'time' to be caused by wave motion (time is a human construct) and that time should be held as a constant, a human reference to measure the change in wave velocity.
I also made some comments on Declan Traill's essay and would appreciate your thoughts on them too.
Cheers,
Geoff
PS - When do i get some of the homebrew, I need it!!