(December 27, 2011 at 1:04 am)rjh4 Wrote:(December 24, 2011 at 5:18 am)Zen Badger Wrote: You misunderstand my point RJh4, If Lisles theory was correct there would be no change in the observed times of Io's emergence from behind Jupiter. It wouldn't matter where Earth was in relation to Jupiter because the transit time would always be zero.
The fact that Roemer did in fact observe a delay in transit means that the further away from Jupiter Earth is the longer it is taking the light to reach us and therefore its velocity is finite.
The actual speed might be open to question (plus or minus a percentage point), but it is nonetheless a finite speed.
And not the instantaneous speed that Lisle is claming.
I don't think I misunderstood you. I just think you are not considering the change in frame of reference and the synchronization issue when a clock is moved. I will refer you particularly to Chapter 7 of the book I cited earlier as it discusses Roemer's work (some of the discussion appears to be on the missing pages) but the conclusion from the book seems to be quite clear and that is that even in ASC, the clocks would read differently and there would be no experimental difference no matter what sychronizing convention one used as long as the two way speed of light remains constant in the two frames.
Apart form the obvious conundrum of judging ASC with something that ASC supposedly overturns, how exactly does any of this apply to Roemers observations?
Roemer was only observing the ONE WAY SPEED OF LIGHT not 2 way. Try to understand that.
By the way, none of this " that is that even in ASC, the clocks would read differently and there would be no experimental difference no matter what sychronizing convention one used as long as the two way speed of light remains constant in the two frames." makes any sense.
Please explain what it is supposed to actually mean.
![[Image: mybannerglitter06eee094.gif]](https://images.weserv.nl/?url=i118.photobucket.com%2Falbums%2Fo112%2Fpussinboots_photos%2FBikes%2Fmybannerglitter06eee094.gif)
If you're not supposed to ride faster than your guardian angel can fly then mine had better get a bloody SR-71.