@jbriggs444: You are basically explaining why we invented units and why a Rolex is better than a sundial. I mostly agree, except at the end:
That's relative. From overwhelmingly good to not at all. We are not in a Hollywood movie.
c
I mean it wasn't guessed in the first place, so measured somehow - we had the uncertainties lately in the historical context. Things are still hidden from me behind a paper wall, I can ask my local uni or just pay access or try zlib, anyway at one point they were measuring, getting better, and...
Summarizing more or less in short:
"We measured c historically by the reference meter stored in Paris until we could achieve very fine-tuned measurements in a vacuum better than needed [here the point - seems not to hurt] while getting more precise clocks (atomic clocks, Cäsium-based, even...
Thanks for the further explanations as well, clarifying it even more.
I feel this is all rather trivial than rocket science but for me very informative. Being authentic I imagine or at least hope other interested people at a similar level may find this thread helpful as well. I feel much...
Thank you guys, you showed almost everything possible to understand better. Am so happy I signed up. I can't ask professors so sticking to asking in a forum, here is one of the best I was told. And indeed is, thanks a lot.
Wasn't reading here in between but read a part of Dale's suggestions...
I know, thought about that when writing. Anyway, I had many discussions with such people, and so I do mention it right away. Doesn't matter. Thanks for your feedback!
While I haven't read about the extinction theorem for me "in vacuum" means in vacuum. Not complicated, what to not understand what I find unbelievable about.
Ah, ok, thanks Dale!
I am going to follow your path "optical extinction theorem" to understand it better. I still can't believe we got c in a "vacuum" just like that, implying the second, meter and etcetera...
Regards,
Dangoe
Thanks for your reply hutchphd,
Of course you are absolutely right
Thanks for your reply hutchphd,
Of course you are absolutely right, I just skipped that because so obvious presumably. Anyway, here we go: “Im bekannten Universum gibt es kein vollständiges Vakuum, und es ist mit bekannten...